Ask HN: Is there a tool like codecademy for other subjects?

I'm surprised there isn't one here for law. Enough people want to know specific legal areas (not enough to practice, just enough to understand the system), that I think this could be a very interesting area to make a codeacademy-like site for. For instance, I know a lot of people that would like to learn basic property/renting law and find it too difficult to go over all of the bylaws and learn whats what.

Edit: Also wanted to say, good list!