Anyone used this for themselves or their children?
http://www.khanacademy.org/
http://en.wikipedia.org/wiki/Khan_Academy
I had this idea some years ago, really awesome to see someone's done it. I didn't have the youtube thought down, just that there should be a step by step map of knowledge that people can go through for free and educate themselves in each of the common fields, from beginner to advanced.
I never made an attempt to learn math, and this gives me some motivation to work towards that. I'm much more interested in math at 30 than I ever was at 14.
Has anyone used it here?