Want a free science class?
Yale, Stanford, MIT, Cornell, and many other universities around the world have introduced free open courses in subjects like physics, biology, and chemistry. In many cases, there is a semester’s worth of recorded lectures, along with exams to test your knowledge. If you have ever wanted an Ivy League science education, here’s your chance!
Complete list here:
http://bit.ly/10OPhfE
There are TONS of really solid courses. My recommendations would depend on your level of basic fundamentals, such as the full complement of calculus classes, or at least 2 levels of chemistry.
If you are calculus educated, the entry level Physics class is an absolute MUST, as it's ALL on video. The professor has demonstrations, examples and anecdotes that really cement your understanding of the material, and you also get professor's notes, exams and other supplemental materials. But if you've never heard of a Pyonting vector a lot of it will be lost on you.
Others are varying levels of usefulness. Some just have a loose collection of notes, and you'd be just as well served finding a used textbook or even wikipedia.
I find the best ones are the fundamental ones. Statics, Dynamics, Electrical Circuits, Thermodynamics, and Basic and Intermediate Chemistry.
These can be found on
ocw.mit.edu and ItunesU as well.