It's no secret the cost of college has gone through the roof, but if you're simply interested in learning, and not the degree, you can now do that for free!
A lot of colleges and universities now offer free online courses to anyone interested in learning! MIT's OpenCourseWare (OCW) is a web-based version of MIT course content and it's available to everyone. The program uses MIT course material from all the undergraduate and graduate subjects taught at MIT. Here's the thing, you don't get college credit for the classes and it's not considered an official MIT education. But if you're just interested in learning the subject, it's free and available to you online. It doesn't get any easier that than.
Open Yale Courses is a similar program offered by Yale University. All of the lectures offered were recorded in Yale classrooms and are available in video, audio and text transcript formats. And, you don't even have to register. That's a pretty good deal. Same deal with this one, you can't get course credit, a degree or certificate, but if what you're interested in is the information, it's there and available to you anytime!
So if you want to go back to school, or just learn a few more things, you can do it for free anytime you want. So check it out!