More free stuff online.
The Khan Academy is a not-for-profit organization with the mission of providing a high quality education to anyone, anywhere.
We have 700+ videos on YouTube covering everything from basic arithmetic and algebra to differential equations, physics, and finance which have been recorded by Salman Khan. He has also developed a free, adaptive math program available here.
To keep abreast of new videos as we add them, subscribe to the Khan Academy channel on YouTube.
The entire video library is shown below. Just click on a category or video title to start learning from the Khan Academy!