[op03]

Khan Academy hands down.

Mainly because they give you a map and a road map if you will to explore the subject. Long way to go to improve the map and ways to explore it based on individual personality and skill levels but that will happen with time.

[Grustaf]

Khan academy is great, but nothing is quite like listening to a certified genius.

[bitexploder]

I think that is part of it. You can catch glimmers of how Feynman thought process worked. How he sees the world. And that is really cool.