Free knowledge

[Sam Sagor]

It came up a while ago that there are free college classes available from places like Stanford and MIT. There are new ones coming out now in video format which until now had been a short coming with MIT (text and pdfs). Game theory is always fun.

http://www.class-central.com/

I also have found these to be an amazing (and free) experience :

http://oyc.yale.edu/

... and you can say you watch astrophysics on your lunch break. It's a great way to get familiar with subjects you know little about.