I love learning new things, and I love it even more when learning is made available to all. So YouTube videos that teach me how to do things are awesome. Admittedly, if you simply type in "How to" into a YouTube search, some very strange things come up, but there are also exercise classes, cooking classes, woodworking and craft classes, to name a few. Here's a video titled Learn How to Screenprint Your Own T-shirts from the MakeMagazine YouTube channel.
During the past few weeks, I've discovered all sorts of places that offer free college-level (non-credit) courses, including some offered by instructors from Stanford, MIT, Harvard, Berkeley, Northwestern, Duke and others). Awesome!