Not theory — a change in your daily habits. From reports to planning to data cleanup, a 6-week hands-on course that puts AI into your everyday work.
The five assistants below respond using the real OpenAI API. Choose an assistant and ask anything freely.
This calls the real OpenAI API (gpt-4o-mini). The API key is stored only in the server's .env.local and is never exposed to the browser.
One live session a week, plus hands-on assignments. Build week by week, and finish with one real automation of your own.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Understand how generative AI produces answers, and learn the four components of a prompt that draw out strong results.
Build three real work documents from start to finish, working together with AI.
A practical workflow for handing off your weekly cleanup, summarizing, and aggregation work to AI.
Speed up drafting your communications while keeping your own tone and style.
Analyze your own work, design where AI fits in, and build it yourself.
Present your finished workflow and get feedback from the instructor and your peers.
Not a time to learn to code — a time to learn how to make a computer do your work for you
Every week you get one working result first — a self-intro program, a grade checker, a class roster, an Excel auto-organizer, a mini AI chatbot — and pick up only the grammar needed to build it. You finish having automated one of your own repetitive tasks for real.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
From installing Python to running your first line of code — learn variables, data types, and input/output, and finish your own self-introduction program.
Use conditionals and loops to build an automatic grade checker and a multiplication-table generator.
Learn to handle many pieces of data at once with lists and dictionaries, and build a class-roster manager.
Learn to read and write real Excel and CSV files, and build an auto-organizer plus a batch file-renamer.
Learn requests and the concept of an API, and build a live weather notifier and your own mini AI chatbot.
Combine everything from the past five weeks to build — and present — a program that automates one of your own real repetitive tasks.
From working code to well-built code — functions, classes, real data, and a dashboard you can show off
Picks up right where Python Basics leaves off. You refactor your own beginner-course programs into functions and classes, make them crash-proof, analyze real tabular data with pandas, automate a task on a schedule, and finish with your own web dashboard running in a browser.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Bundle repeated code into functions, and combine code split across multiple module files into a larger, well-organized program.
Learn the class concept — bundling data together with the functions that act on it — and design your own student-management system.
Use try/except so a program keeps running even on unexpected input, and build debugging habits that quickly track down the cause of a problem.
Use pandas, the standard tool for real-world data analysis, to filter, aggregate, and visualize tabular data with ease.
Automatically pull information from a webpage, and build a program that runs itself on a schedule with no one at the keyboard.
Combine functions, classes, error handling, data analysis, and automation from the past five weeks into your own web dashboard, viewable right in a browser.
From a dashboard people can view to a service anyone can use — decorators, real databases, your own API, and a live deployment
The final stage after Python Basics and Intermediate. You extend your own intermediate-course code with decorators and inheritance, write automated tests so changes never break silently, store data in a real database instead of a file, build your own REST API server, and finish by deploying a full-stack service to a real, live internet address.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Learn variable arguments (*args, **kwargs) and closures, and use decorators to add behavior to an existing function without touching its code.
Extend the classes from Week 2 of the intermediate course using inheritance to reuse code, and magic methods to make classes behave more naturally.
Write automated tests with pytest so that every time you change code, problems are caught instantly — no manual re-checking required.
Learn SQL basics and SQLite integration, storing and querying data safely in a database instead of a file.
Build your own API server with FastAPI, so other programs can request and use your data and functionality.
Combine the intermediate course’s web dashboard with this course’s API and database into your own service, deployed to a real internet address.
An academy for New Testament exegesis grounded in SFL linguistics, and for strengthening AI literacy
We read the Greek New Testament alongside its Synoptic parallels, exegeting each passage at the level of the original language.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Reference: Synopsis in Logos →
Matthew has Jesus "go up the mountain" (ἀνέβη εἰς τὸ ὄρος), evoking Sinai and narrowing the audience to "his disciples," while Luke has him "come down" (καταβάς) to a level place, addressing not only "a great crowd of his disciples" but "a great throng of people" from Judea, Jerusalem, Tyre, and Sidon. The same discourse function — scene-setting — carries each evangelist's distinct emphasis: Mosaic authority versus openness to all people.
↑ Generated from the Logos synopsis reference linked above, as a preview of the course’s research method.
Compares Matt 4:17 onward (the inaugural proclamation, the call of the disciples, and the ministry summary) with Mark 1:14-20, 39 and Luke 4:14-15, 44; 5:1-11, and examines the passage’s information structure through Greek verbal aspect (perfective/imperfective/stative).
Kids Version (Age 11) →Compares Matt 5:1-5 (the sermon’s setting and the first three beatitudes) with Luke 6:17, 20-21, examining the macarism (beatitude) form, its Old Testament background (Isaiah 61, Psalm 37), and the editorial differences between Matthew and Luke.
Kids Version (Age 11) →Compares the remaining five beatitudes (5:6-10) and the second-person closing (5:11-12) with Luke 6:21a, 22-23, examining the inclusio structure of 5:3-5:10 and the Old Testament background of Matthew’s unique (M) material.
Kids Version (Age 11) →Compares Mark 14:1-2 (the chief priests’ secret plot) with Matt 26:1-5 (which includes Jesus’ own passion prediction) and Luke 22:1-2, focusing on the lexical inclusio formed between Week 1’s ἤγγικεν and Luke 22:1’s ἤγγιζεν.
Kids Version (Age 11) →Compares Herod’s execution of John the Baptist (Matt 14:3-9) with Mark 6:17-26, examining the two Gospels’ differences over "who wanted John dead," the allusion to Esther, and the structural parallel with Jesus’ own Passion.
Kids Version (Age 11) →Compares Judas’s betrayal bargain (Mark 14:10-11) and the preparation for the Passover meal (14:12-16) with Matt 26:14-19 and Luke 22:3-13, tracing how the ἐγγίζω root followed since Weeks 1 and 4 reaches its completion in Matt 26:18.
Kids Version (Age 11) →Compares the announcement of betrayal at the Passover table (Mark 14:17-21) with Matt 26:20-25 and Luke 22:14, 21-23, examining Matthew’s unique material (Judas’s title "Rabbi") and Luke’s distinctive theological vocabulary (ὡρισμένον).
Kids Version (Age 11) →Compares the institution of the bread and cup (Mark 14:22-26) with Matt 26:26-30 and Luke 22:15-20, examining the difference between the allusion to Exodus 24 (Mark/Matthew) and Jeremiah 31 (Luke), and the point at which the "kingdom of God" theme, traced since Week 1, is concretized as an eschatological banquet.
Kids Version (Age 11) →Compares the prediction of the disciples’ scattering and Peter’s denial (Mark 14:27-31) with Matt 26:31-35 and Luke 22:31-34, examining Luke’s unique Satan motif, intercessory prayer, and pastoral commissioning.
Kids Version (Age 11) →A one-week departure from the Synoptic parallel study, examining in three sub-topics how Hebrews 11:4 reinterprets the Genesis 4 story of Cain and Abel through the lens of faith — the Greek text, the Old Testament background, and the passage's theological implications.
View Sermon Draft (with Odyssey & JEPS ties) →A New Testament Greek grammar primer for the SFL Biblical Exegesis Academy — from the alphabet to basic sentence analysis
Rather than rote memorization of rules, this 6-week primer approaches Greek grammar as a system of choices that realizes meaning — the same SFL lens used throughout the academy. Finish it, and you can follow the original-language readings in the SFL Biblical Exegesis Academy from day one.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Ask Dain the AI Assistant →Learn the names and sounds of the 24 letters of the Koine Greek alphabet, its diphthongs, breathing marks, the three Greek accents (acute, grave, circumflex), and the rules for dividing syllables and locating the accent — then put it all to immediate use by reading John 1:1 aloud. We also approach the writing system itself through the SFL view of a "system of choices that realizes meaning as sound."
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: Accents and Manuscripts (3 Weeks) →Learn how Greek nouns decline by case (nominative, genitive, dative, accusative, vocative), gender (masculine, feminine, neuter), and number (singular, plural), and memorize the full paradigm of the definite article to check agreement with nouns.
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: The Cases (3 Weeks) →Advanced: Pronouns (3 Weeks) →Learn the principle by which an adjective agrees with the noun it modifies in gender, number, and case, and extend the noun system through a representative consonant-stem third-declension noun.
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: Adjectives and the Third Declension (3 Weeks) →Survey the basic organization of the Greek verb (voice, mood, tense-aspect, person, number), and memorize the present active indicative personal endings through the regular verb λύω and the irregular verb εἰμί.
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: Contract and -μι Verbs (3 Weeks) →Learn the aorist active indicative paradigm, and — as a preview for the SFL Biblical Exegesis Academy — study S. Porter's theory that the difference between present and aorist is not merely formal but a matter of verbal aspect: the viewpoint from which the speaker presents an event.
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: The Aorist (3 Weeks) →Analyze the Greek text of John 1:1 word by word (part of speech, case, person), synthesizing six weeks of grammar. Taking the καί that joins its three clauses as the way in, learn the most frequent conjunctions of the New Testament along with the postpositive rule governing δέ, γάρ, and οὖν — and build the bridge into the SFL Biblical Exegesis Academy.
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: The Article (3 Weeks) →Advanced: Conjunctions (3 Weeks) →Continuing from Week 4's active voice, learn the present-tense endings shared by the middle and passive voices, and the concept of the deponent verb — middle in form but active in meaning.
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: Voice (3 Weeks) →Learn the imperfect paradigm — past tense with imperfective aspect, the pair of Week 5's aorist — and explain, through aspect theory, why John 1:1's ἦν is imperfect.
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: The Imperfect (3 Weeks) →Learn reduplication, the formal marker of the perfect tense, and take up in full the "stative aspect" previewed in Weeks 1 and 5 — the viewpoint that marks, with the heaviest emphasis, that the subject is in a given state.
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: The Perfect Tense (3 Weeks) →Learn the form of the participle — carrying both a verb's aspect and an adjective's declension — and study its real use through Mark 1:4 (connecting to the Week 4-6 texts of the SFL Biblical Exegesis Academy).
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: The Perfect Participle (3 Weeks) →Advanced: The Future Participle (3 Weeks) →Learn the two aspectual forms of the (uninflected) infinitive — present and aorist — and fully analyze, using infinitive grammar, the ἤρξατο...κηρύσσειν construction from Matt 4:17 covered back in Weeks 6-9.
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: The Infinitive (3 Weeks) →Move beyond statements of fact (indicative) to learn the two moods that express possibility (subjunctive) and command (imperative), including the New Testament's very frequent ἵνα + subjunctive purpose clause.
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: The Subjunctive and Imperative (3 Weeks) →Extend the Week 6 analysis of John 1:1 through 1:5 to read the information hierarchy built by the imperfect, aorist, perfect, and present — then move to Mark 1:14-15 to review participles, infinitives, and imperatives as well. None of those three categories occurs in John 1:1-5, so a second text is needed to exercise all twelve weeks. The two passages are also set side by side for how they join their clauses: John lays everything out flat on καί alone, while Mark shifts the scene with δέ and opens direct speech with ὅτι.
Kids Version (Age 11, KO/EN) →SFL+Rhetoric Beginner Companion →Advanced: Integrated Exegesis (3 Weeks) →An introduction to the Synoptic Problem and comparative method for the SFL Biblical Exegesis Academy
A 6-week course covering the Synoptic Problem, the Two-Source Hypothesis, and the method of laying Matthew, Mark, and Luke side by side — plus each Gospel's distinct theological emphases. Finish it, and you'll have both the grammar (SFL Beginner Greek) and the methodology to read the SFL Biblical Exegesis Academy's weekly parallel texts with full understanding.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Ask Dain the AI Assistant →Survey why Matthew, Mark, and Luke are called "Synoptic" (seen together), and what the "Synoptic Problem" is — the puzzle created by their striking verbal and structural agreements alongside their differences.
Kids Version (Age 11) →Learn the two pillars of the majority scholarly view — Markan Priority and the Q hypothesis — with their supporting evidence, and survey how Matthew and Luke each edited these two sources.
Kids Version (Age 11) →Practice firsthand the method of synoptic comparison used every week in the SFL Biblical Exegesis Academy, and learn the basics of redaction criticism — asking what an author added, omitted, or changed.
Kids Version (Age 11) →Examine how Matthew's unique (M) material — absent from Mark and Q — portrays Jesus as the "fulfillment of Israel," and study the recurring Old Testament fulfillment-quotation formula.
Kids Version (Age 11) →Identify Mark's theological emphases through the Gospel's characteristically rapid narrative pace and the recurring "Messianic Secret" motif that repeatedly conceals Jesus' identity.
Kids Version (Age 11) →Examine Luke's editorial tendency to give special attention to Gentiles, the poor, and women, and his emphasis on the activity of the Holy Spirit, connecting six weeks of Synoptic methodology to the actual readings of the SFL Biblical Exegesis Academy.
Kids Version (Age 11) →Apply the comparison method from Week 3 for the first time to a real triple-tradition text — Jesus' baptism and wilderness temptation — comparing the three Gospels' differing length and theological emphasis.
Kids Version (Age 11) →Compare the Parable of the Sower, a representative triple-tradition parable, and examine how the interpretive section — often longer than the parable itself — is polished differently across the three Gospels.
Kids Version (Age 11) →Compare the one miracle recorded in all four Gospels — not just the Synoptics but John as well — examining how the wilderness, shepherd, and Passover motifs are emphasized differently in each.
Kids Version (Age 11) →Compare Peter's confession, the climax of the Messianic Secret motif covered in Week 5, and analyze Matthew's unique addition to this scene — the "on this rock I will build my church" declaration (M material).
Kids Version (Age 11) →Compare the Transfiguration, occurring six or eight days after Peter's confession (Week 10), examining how the heavenly voice forms an inclusio with the baptism scene (Week 7) and Luke's distinctive emphases.
Kids Version (Age 11) →Compare the entry into Jerusalem and the cleansing of the temple — immediately preceding the Passion Narrative (Weeks 4-6 of the SFL Biblical Exegesis Academy) — examining Matthew's double fulfillment citation and Mark's "sandwiched" cursed fig tree structure.
Kids Version (Age 11) →Compare the Last Supper text in full — whose opening (Mark 14:10-16) was already covered in Week 6 of the SFL Greek course — completing your own parallel comparison table using every method learned across Weeks 1-12: source hypotheses, redaction criticism, Old Testament citation, and narrative insertion.
Kids Version (Age 11) →Applying systemic functional linguistics to everyday persuasion — ads, negotiation, reports, and speeches
Not a course about grammar rules — a course about the language choices behind persuasion. Each week you analyze real ads, news, emails, and speeches through one of SFL's three metafunctions, then apply what you found to your own message. You finish having designed and revised a real persuasive message of your own.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Take apart a real ad slogan using SFL's three axes — Field (what it's about), Tenor (who is speaking to whom), and Mode (through what medium) — and see that "persuasiveness" isn't a feeling but the result of analyzable language choices.
Classify news headlines using SFL's process types (material, relational, mental), and see how the passive voice and nominalization hide or reveal an agent.
Learn declarative/interrogative/imperative mood and hedging expressions that dial modality up or down, and design sentences for negotiation and requests that earn trust and persuasive force at once.
Learn how what you place at the head of a sentence or paragraph (the Theme) steers the reader's attention, and redesign the opening lines of a report, email, or presentation using thematic progression.
Analyze a real famous speech, ad, or column clause by clause, seeing how the ideational, interpersonal, and textual devices from the past four weeks work together within one genre structure.
Draw on everything from five weeks — Field/Tenor/Mode, process types, mood and hedging, thematic progression, and genre skeletons — to draft your own real persuasive message, then refine it with SFL-based peer feedback.
A hands-on project course — build your own website with AI, from planning to launch
Six weeks, one project: your own live website. No coding background required.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Work with AI to clarify who the site is for and what it should show, and map out its full page structure.
Work with AI to set a tone direction (colors, fonts) and draft the core copy for each page.
Use an AI coding tool to turn your Week 1-2 plan and copy into a working home page draft.
Fill in the remaining pages — about, services, contact — and prepare images and icons with AI.
Add features visitors can actually interact with — forms, a chatbot — and polish the mobile screen.
Deploy your finished site to a real domain, then wrap up the project with presentations and feedback.
From product analysis to final review — build a complete e-commerce detail page with AI in one day
No design software needed. From product and reference analysis to section structure, section-by-section copy and image direction, final review, and a prompt formula for AI-generated product shots.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Ask Dain the AI Assistant →Brief the AI with product information to extract core selling points, and analyze competitor detail pages to define what makes your product different and the tone that fits your target customer.
Learn the standard e-commerce detail-page section flow (hook → problem → solution → trust → FAQ → CTA), and use AI to design a section skeleton tailored to your product.
Draft copy for each section of the Step 2 skeleton with AI, and design the image direction so the visuals visually reinforce what the copy emphasizes.
Have the AI review the finished detail page for tone consistency, exaggerated-claim risk, and mobile readability, and make final polish before publishing.
Learn a reusable prompt formula — subject, composition, lighting, mood, background — for generating styled product shots with AI image tools without a real photoshoot.
SFL (Systemic Functional Linguistics)-based literacy — a picture-and-activity book, 《Everyday Letter Play That Makes Little Mouths Burst with Words》
Instead of decontextualized phoneme drills, this book lets a 4-year-old discover letters visually and phonetically inside everyday meaning and context (Field · Tenor · Mode). Each unit moves from a whole context sentence, to a key word, to letter-and-sound matching — 12 units across 4 parts (Me & Family, Play & Movement, Senses & Feelings, Nature & Time), 48 pages total.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 off with advance registration by the deadline)
Ask Dain the AI Assistant →Discovers the letters for hand, foot, eye, and nose through body-awareness play ("Hands up, feet stomp!").
Supplementary Lesson Plan (Full Curriculum) →Discovers the letters for rice, bread, apple, and water through mealtime requesting ("Apple please, gulp!").
Discovers the letters for mom, dad, me, and home through greetings and attachment ("Hi Mom, love Dad!").
Discovers the letters for boom, click, pop, and tower through block-stacking play.
Discovers the letters for car, train, boat, and vroom through vehicles and motion.
Discovers the letters for dog, bird, cow, and horse through animal sounds and sights.
Discovers the letters for laughter, tears, love, and poke through sharing feelings.
Discovers the letters for red, yellow, blue, and green through color description.
Discovers the letters for fire, water, ice, and sweat through physical sensation.
Discovers the letters for sun, moon, star, and rain through observing nature.
Discovers the letters for flower, grass, tree, and soil through exploring nature.
Discovers the letters for night, dream, sleep, and snore through the bedtime routine.
JEBS (JEPS English Bible School) worksheets — key-sentence rhythm recitation and 5W1H (6-question) Q&A on the Old Testament
Each lesson opens with a rhythmic key sentence, moves through today's vocabulary, and expands the passage with a 5W1H (Who/What/Whom/How/How much/Why) fill-in-the-blank worksheet — an 8-week course covering Old Testament Volume 1.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Ask Dain the AI Assistant →Starts from "In the beginning, God made everything," moves through "And God made Adam and Eve," and ends with "God looked at all he had made, and said, 'Very good!'" — all expanded via 5W1H Q&A.
Starts from "On the seventh day, God finished his work, and rested," and moves to a second round built on "God blessed the day and made it holy."
Starts from "God loved Adam and Eve so much that He blessed them," and moves to a second round built on "Be fruitful and multiply. Fill the earth and govern it."
Starts from "One day, they ate the forbidden fruit, and sinned against God," and moves to a second round built on "God punished them, and drove them out of Eden."
Recites the key sentence "It's because they didn't listen to God, but they followed Satan," then expands the passage through 5W1H Q&A.
Starts from "They got to have the mind of Satan" and moves to a second Q&A round built on "Anyone with the sinful nature couldn't live with the Holy God."
Reads Genesis 4:1-3 together in Korean and English, starting from "Eve gave birth to Cain and Abel," moving through "Cain was a farmer, and Abel was a shepherd," and ending with "One day, Cain and Abel presented their gifts to God" — all expanded via 5W1H Q&A.
Reads Genesis 4:4-5, 8, 16 together in Korean and English, starting from "God accepted Abel's gift only," moving through "Cain got angry and killed Abel," and ending with "God punished him, and he roamed about without God" — all expanded via 5W1H Q&A.
The eight lessons above make up the full curriculum for Old Testament Volume 1.
JEBS (JEPS English Bible School) worksheets — key-sentence rhythm recitation and 5W1H (6-question) Q&A on Heaven and Hell
Each lesson opens with a rhythmic key sentence, moves through today's vocabulary, and expands the passage with a 5W1H (Who/What/Whom/How/How much/Why) fill-in-the-blank worksheet — an 8-week course covering Old Testament Volume 2, from judgment and hell to the hope of heaven.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Ask Dain the AI Assistant →Opens with the question "If we die with sin, what happens?", expands the key sentence "We are judged, and sent to hell" through 5W1H Q&A, and previews the next lesson with "What is hell like?"
Starts from "Hell is a lake of fire," moves through "This was the place for Satan and his angels," and ends with "But Satan's followers are also thrown into hell" — all expanded via 5W1H Q&A.
Starts from "In hell, we are burnt in blazing fire," moves through "The fire never goes out," and ends with "And the flesh-eating worms never die" — all expanded via 5W1H Q&A.
Starts from "We cannot take a sip of water," moves through "We scream in great pain," and ends with "But, we have to stay there forever" — all expanded via 5W1H Q&A.
Opens with the question "Then, what is heaven like?" and expands the key sentence "Heaven is the place we can live with Jesus happily forever" through 5W1H Q&A.
Starts from "It is decorated with beautiful jewels," moves through "There flows the river of the water of life," and ends with "There are trees of life on the riversides" — all expanded via 5W1H Q&A.
Starts from "There is no curse and no sadness," moves through "There is no darkness, for God gives light," and ends with "We can see and worship God and Jesus" — all expanded via 5W1H Q&A.
Starts from "Not everyone can go to heaven," and moves to a second round built on "Only those whose names are in the book of life can enter heaven."
The eight lessons above make up the full curriculum for Old Testament Volume 2.
Grip to mini game in 4 weeks — a hands-on beginner course
No experience needed. Four weeks, one session a week — grip and stance, forehand, backhand and serve, then a real rally and mini game.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Ask Dain the AI Assistant →Learn the characteristics of table tennis's two representative grips (shakehand and penhold), and master the wrist angle for holding the racket and a low-center-of-gravity basic stance.
Break down the three stages of the forehand stroke (takeback, impact, follow-through), and repeatedly drill the form through multi-ball training, where the coach feeds a continuous series of balls.
Learn the backhand stroke, whose swing is more compact than the forehand, and practice serving according to international rules along with the backspin serve that beginners should master first.
Connect the forehand and backhand from Weeks 2-3 into an alternating rally, learn the basic rules of an actual match (11-point scoring, serve rotation), and play a hands-on mini game.
Loop drive to third-ball attack in 4 weeks — for players who have finished the beginner course
For those who already have the grip, stance, forehand, backhand, and serve down. Four weeks, one session a week — forehand loop drive, backhand topspin and pivot footwork, reading serve spin, then the third-ball attack and basic tactics.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Ask Dain the AI Assistant →Moving beyond the beginner "collision" impact, learn the brushing sensation of sweeping the racket face across the ball's surface, and practice looping backspin balls over the net.
Learn to add wrist brushing to the elbow-pivoted backhand stroke to create backhand topspin, and train the pivot footwork that turns a ball hit to the backhand corner into a forehand attack.
Learn three visual cues for distinguishing an opponent's serve spin, and train the basic receive principle of adjusting the racket face angle differently for each type of spin.
Connect the loop drive and receive skills from Weeks 2-3 to the serve, training the third-ball attack — the highest-percentage scoring opportunity in table tennis — and learning basic course-selection tactics to apply in a real game.
Serve strategy to live match simulation in 4 weeks — for singles competition
For those who already have basic strokes down and want to win real matches. Four weeks, one session a week — using the serve rotation, reading opponent types, pacing over a long match, then decision-making by score situation.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Ask Dain the AI Assistant →Learn to use the rule that the server changes every 2 points strategically, and train the habit of watching the opponent's footwork and racket angle mid-rally to anticipate the next ball.
Learn to identify within the first few rallies whether an opponent is a defensive (steady, consistent) player, an attacking (heavy smash) player, or a fast-attack (short, quick) player, and the matching tactic for each.
Learn to conserve energy over a long match by not putting full power into every shot, and how to use timeouts and tactical shifts right after winning or losing a set to steer the momentum.
Combines three weeks of serve strategy, opponent-type responses, and pacing into decision-making principles that change depending on whether you are leading, trailing, or at deuce, applied in real 11-point games.
Serve rotation to team communication in 4 weeks — for doubles competition
For those who already have basic strokes down and want to play doubles well. Four weeks, one session a week — doubles serve rules, partner movement and footwork sync, serve-receive tactics, then real match management and communication.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Ask Dain the AI Assistant →Learn the rule that a doubles serve must land in the diagonal court, and the A-B-A-B alternating hitting-order rule for the two players on a team, training the teamwork needed to never lose track of the order.
Learn the X-pattern movement of immediately clearing diagonally after hitting to open space for the partner, and train the sense of movement needed to avoid colliding with or blocking the partner's view.
Understand why short serves are effective at blocking a strong third-ball attack in doubles, and train the receive teamwork where the partner not receiving pre-moves to the next position and waits.
Combines three weeks of serve rotation, movement, and serve-receive tactics into real 11-point games, building the doubles-specific habit of briefly aligning on the next tactic with a partner after every point.
Readings in classical Greek literature — starting with Homer's Odyssey
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Ask Dain the AI Assistant →Surveys how Homer's 24-book epic divides into three acts (the Telemachy, the wanderings, and the homecoming/revenge), its in medias res narrative technique, and the four core themes: nóstos, xenía, mêtis, and anagnórisis.
View Lesson Notes (강의안) →Read the Greek Text (교재) →Verbal Aspect Commentary on the Proem →Commentary 2 — Parallels with Biblical Prologues →Word-by-Word Grammar & Paradigm Tables →Odysseus brings down Troy with the wooden horse, then in his triumph boasts that he owes the gods nothing — provoking Poseidon's wrath and opening the ten-year ordeal of his journey home.
View Lesson Notes (강의안) →Read the Greek Text (교재) →Trapped on the island of the Cyclopes, Odysseus tricks the giant with the name "Nobody" and blinds him to escape — but boasts his real name while sailing away, drawing Poseidon's curse.
View Lesson Notes (강의안) →Read the Greek Text (교재) →The crew's suspicion opens a bag of trapped storms and sends the ship adrift again; after rescuing his men from Circe's spell that turned them into swine, Odysseus learns he must first journey to the underworld to find his way home.
View Lesson Notes (강의안) →Read the Greek Text (교재) →Descending alive into the underworld, Odysseus is warned by Tiresias never to touch the cattle of Helios, and meets the shades of his mother and Achilles — confronting the fragility of life and death.
View Lesson Notes (강의안) →Read the Greek Text (교재) →Odysseus resists the Sirens' song, loses six comrades to Scylla, and after his crew slaughters the cattle of the sun and dies for it, washes up alone on Calypso's island — where he refuses immortality and builds a raft toward home.
View Lesson Notes (강의안) →Read the Greek Text (교재) →Disguised as a beggar, Odysseus returns home, reunites with his son, slays the suitors with the bow only he can string, and is finally recognized by Penelope through the secret of their bed — restoring peace to the kingdom.
View Lesson Notes (강의안) →Read the Greek Text (교재) →Preaching based on SFL linguistics and Greek verbal aspect analysis
This course analyzes the Greek New Testament through SFL linguistics and Stanley Porter's verbal aspect theory, then uses that analysis to compose sermons that apply the text's message to daily life.
Lesson 1 is a free trial · Full course ₩100,000 (₩50,000 with advance registration before the course begins)
Learn the foundations of Systemic Functional Linguistics (SFL) and Halliday's three metafunctions (ideational, interpersonal, textual), Stanley Porter's theory of Greek verbal aspect (perfective/imperfective/stative), and how to analyze the information structure of New Testament texts.
Read selected New Testament passages directly in Greek (e.g., Matthew, Mark, Luke, John), analyzing verbal aspect, tense, voice, and other grammatical elements. Using the SFL three-metafunction framework, map the information structure of the text and understand how the passage realizes theological meaning.
Based on the theological meaning and information structure of the Greek text analyzed in weeks 1-2, compose a sermon that clearly communicates to modern audiences. Experience how verbal aspect analysis connects to the emphasis of your sermon message and its application to daily life.