To start: press space. Goal: match the colored squares with the color panel, miss too many times and you lose. moving the control panel: arrow keys There are seven levels, you can see which level you're on with the "level map" at the top, or the worded format at the bottom right. The big block at the top right is a predictor of the upcoming color.
I know its short but its more of a minigame than anything. It gets harder as you progress so be careful and most importantly, have fun! :)