This isn’t news, but a lot of folks don’t know about this wonderful resource yet: Course lessons from a number of universities are free and open to the public online. For example, open courseware materials from the MIT Department of Linguistics and Philosophy can be found here. Philosophy courses from Notre Dame are available here. A list of institutional sites for OCW material is here, via the Open Courseware Consortium. And, of course, this is not just limited to philosophy courses. If you want to, e.g., watch a series of lectures on physics, you can do that too.