You could create dojos for simple player game.
A place where you can train, with instructions for some basic moves like punching, kicking...
Could create a simple way where people could create tutorials for their created moves, them others could import theses tutorials via game, and see it in the dojo, just as having a teacher...
Maybe even "buy" some tutorials...

There's already a FIGHT SCHOOL in the game menu. If you want to create a dojo in a single-player game you have to open the game menu , click setup , click game rules and then change the Dojotype and Dojosize.