Universities house an enormous amount of information and their libraries are often the center of it all. You don't have to be affiliated with any university to take advantage of some of what they have to offer.
The Worlds Largest Online Library. Access the best in academic resources like Books, Journals, Articles, Encyclopedias and more. Faster, Easier Research online.
Academic Earth offers free access to video courses and academic lectures from leading colleges and universities.
The best place on the web to learn anything, for free. The list provides the best links to learn about academics, music, programming, languages and other useful resources.