Just finished the last quiz in the Introduction to Philosophy course I've been doing, and watched the last lecture earlier today. There's an optional essay as well. I learned a lot from it, including what philosophy is, which (it turns out) is not quite what I had thought. I'm glad I did it, wish I'd done something along those lines years ago. It's like necessary orientation in any field of study. I will take some time to assimilate it. Meanwhile, I've signed up for another Coursera/University of Edinburgh course next year in the Philosophy of Science which was by far the most interesting section for me and I'd like to follow it up (aesthetics was not covered).I think we had the same professor with steam punk goggles as A.J. Jacobs in the article linked below (from the New York Times, 21/4/13), an opinion on Massive Open Online Courses (MOOCs). My previous experience of online learning in my art degree resembled his in many ways.
http://www.nytimes.com/2013/04/21/opinion/sunday/grading-the-mooc-university.html?hp&_r=0