Some of you might be interested in this. This organization provides free online courses that are open for anyone to take. They are structured just like you might take a class at a university, with lectures, assigned reading, and a time schedule. Most of their courses are 1-2.5 months long and the work load is estimated from 2-10 hours a week, depending on the course. Their services are currently free but word goes that this may change in the future.
I haven't taken any of these so no idea how good they are, but there is a number of them opening very soon, on the 28th, so I've signed up for one and will see how it goes.
TED talk given by one of their founders Daphne Koller