Khan Academy

[nzCdog]

Have you seen this site?  Its an extraordinary resource of free education... a great place to hone your math chops, which is exactly what I'm doing myself

http://www.khanacademy.org/
Or watch tutorials on youtoobs:
http://www.youtube.com/user/khanacademy?blend=1&ob=4

[crashguitar]

It is a pretty good tool. I teach math and several of my coworkersmand I are using it with our classes.