Quick answer
Teach the tiles by touch, play one open-rack hand with no Charleston, add the Charleston on hand two, and save the card's fine print for another night.
Most attempts to teach mahjong fail in the first ten minutes, because the teacher starts with the card. The card is the last thing a beginner needs. Here is a two-hour plan that has someone playing a real hand inside half an hour, in the order that actually sticks.
Before they arrive, set the table so the first ten minutes are hands-on
Tiles out of the case and face up in a loose pile, four racks in place, one card per player, and nothing to read. If you have a set with printed numbers on the bams and craks, use it tonight; the Arabic numerals save a beginner a whole layer of translation.
Decide now that you will not explain scoring, jokers in exposures, the bettor, or table rules tonight. Every one of those can wait a week, and every one of them, taught early, costs you the learner.
Minutes 0 to 15: the tiles, by touch
Have them sort the face-up pile into groups without telling them the groups. They will find the three suits on their own, then the winds, then the dragons, then the flowers, and the jokers last. Name each group as they find it. Point out that the soap, the plain white tile, is the white dragon, since that one catches everybody.
Then say the only thing that matters about the tiles tonight: there are four of every tile, the suits are just three colours of the numbers one to nine, and the picture tiles are extras. Names like bam and crak can be learned by using them, not by being told.
Minutes 15 to 30: what a hand is, using one section of the card
Open the card to one section only and explain the conventions: colours stand for suits, a number printed three times means three of that tile, four times means four, and a pair is two. Build one hand from that section face up on the table with real tiles so they can see the pattern become objects.
Then close the card. The lesson is that a hand is fourteen tiles matching a pattern, and that the card is a menu, not a rulebook. That is enough for hand one.
Minutes 30 to 60: one open-rack hand, no Charleston
Deal thirteen each, fourteen to East, and skip the Charleston entirely. Everybody plays with their tiles standing face out so the table can see them. You narrate: draw, decide, discard and name it aloud. When a discard could complete a set for someone, stop the game and walk them through calling it and laying the set face up on the rack.
Let the hand run to the end even if it is a wall game. The point is the rhythm of draw and discard, and the moment they call a tile for the first time.
Hand two: add the Charleston
Now teach the pass: three tiles right, three across, three left, then the optional second round the other way, then the courtesy pass. Keep the racks open for this hand so you can help them choose what to pass, and say out loud what you are passing and why from your own rack.
This is where a beginner first meets the real question of the game, which is what direction a deal is going. Do not answer it for them. Ask them what they see, then tell them what you see.
Hand three: close the racks and let them lose
Normal play. Resist correcting every discard; correct only the two rules that stop the game working, which are calling a tile before the next player racks, and naming your discard. Everything else is style, and style comes from playing.
If they lose all three hands they have still had a good night, provided they called one tile, passed one Charleston and understood why one direction beat another. That is the whole first lesson.
What to leave for another night, and how to keep them coming back
The joker exchange, the bettor, the pie, dead hands, scoring and payouts, and the local table rules all belong to week two or three. Teach them when they come up in play, one at a time.
Between game nights the fastest way for a beginner to improve is to hear a hand read out loud with reasons: which direction, what to keep, what to pass and why. That is what the coach here does for any deal, and a new hand is read that way every morning, free.
Put it into practice
A fresh coached hand every morning, the coach on call for your own tiles, all ten lessons and the 14-day course. $14.99 a month, cancel anytime.
The hardest part of teaching is explaining why a hand leans one way. Mei, our AI coach, does that for any deal in plain English, so your beginner can hear the reasoning at home between game nights.