>>353503087
It looks scarier than it is.

Basic:
* get 4 sets (of three - sequences or triplets of the same tile) and a pair
* it also need to have at least one yaku (poster with yakus is in the parlor, dragons, winds, or all simples is the most easy ones)
* you can also steal tiles to finish sets of 3
* you can steal the last tile

And you know how to basically play mahjong