Text editors should take a lesson from video games. In many games, you have access to subset of total weapons, powers, whatever. As you advance and master the basic weapons, more weapons become available to you. By the end of the game you have direct experience with all or most of the weapons – from basic to advanced.
How many times have you done something cool or strange in Vim only to think, “How did I do that?”
video-game-mode would be a fun way to learn an editor: start with the basic commands and unlock more as you progress.