Catchy title right!!! Anyway a classmate has blessed me and I you with possibly the BEST website ever focusing on understanding our most hated classes. Maybe not hated but boring. HA! Any how Salman Khan is the mastermind behind this incredible site where he himself clearly explains MANY formulas for math, physics, chemistry and even investing. Even Bill Gates himself has invested in him and goes to this site on the regular to brush up on his studies.Best thing is this site is F R E E!!!! Prepare to become smarter friends!!!! Link here --> http://www.khanacademy.org/