I was surfing the internet for some information on a particular type of math when I stumbled across this interesting website:
http://www.textbookrevolution.org/
Apparently they have a lot of free textbooks downloadable in pdf format. It's pretty wild the amount of stuff thats out there these days for anyone that wants to learn.
Getting it onto the computer was the easy part though, now I need to get it into my head. :-P
Maybe this thread could share other educational resources people have found?