Learn programming languages

This is a relatively new endeavor, and I'm not sure how it will come out, but it's worth looking at.

http://mashable.com/2010/12/17/learn-html5-javascript-and-css-with-mozillas-free-school-of-webcraft/

Mozilla is working with Peer2Peer U in developing this. The quality of the courses will depend on the teachers, of course.

http://p2pu.org/

GREAT Math learning resource

K-everything, by level or by skill---this site pulls resources from around the web to help with math learning. Fun stuff, too.

http://www.onlinemathlearning.com/index.html