Only a select few of us will ever attend MIT. But that doesn't mean we can't learn a thing or two. Mimicking the principle of open-source software, MIT OpenCourseWare offers many class materials for free, with lecture notes, class assignments, tests and even the audio and video of professors' lectures. It will take some time and effort to get up and running with the courses and related materials, but so too does applying to MIT. (See the MIT OpenCourseWare mobile app.)