Khan Academy. VideoLectures - exchange ideas & share knowledge. Top 10 Universities With Free Courses Online. #1 UC Berkeley Ranked as the #1 public school in the United States, Berkeley offers podcasts and webcasts of amazing professors lecturing.
Each course has an RSS feed so you can track each new lecture. For printable assignments and notes you can check the professors homepage, which is usually given in the first lecture or google his name. Even though the notes, homework and tests are not directly printed in the berkeley website, as they are in MIT and other courseware sites, it's not a problem to find them.