Caltech posted online Feynman lectures in physics

The best physics textbook of all times and peoples is now available online .

The California Institute of Technology, where Richard Feynman spent most of his research career, laid out well-organized lectures for public access (formulas are displayed through MathJax). If you didn't have physics at university (or, as in my case, you were not on it), this is a great chance to catch up. All content, of course, is in English, but the lectures are written in extremely simple language. It is also worth noting that only the first and third volumes are available so far; The second promise to lay out in the near future.