I like interactive, but it seems to work well only if you can simulate the commandline well enough in the browser (like Codecademy does). If you do anything adv

I like interactive, but it seems to work well only if you can simulate the commandline well enough in the browser (like Codecademy does). If you do anything advanced, it has to be done really well. These are couple of good examples: http://worrydream.com/LadderOfAbstraction/ http://worrydream.com/LadderOfAbstraction/ http://www.youtube.com/watch?v=7XUWpze_A_s http://www.youtube.com/watch?v=7XUWpze_A_s