Not sure how many people know about this, but there's a great education/tutorial site at http://www.khanacademy.org/Sal, the one-man teacher you puts his lessons on YouTube, has videos for just about everything it seems. Nearly everything in math worth knowing (from basic addition to differential equations and statistics) to the major sciences, art history and more.
I used some of the videos recently to remember statistics for a class project.
Anyhoo, take care and good luck!
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Chris Stevenson