The promise of sites like edX, Coursera, and Udacity is that you can partake in (mostly) free courses on all sorts of topics, (often) on your own schedule. Think of these tools like webinars, but better in pretty much every way – and about stuff that you’re actually interested in. There are presentations, videos, and resources around specific learning outcomes and topics. The end result is a wonderfully handcrafted course that teaches you about a practical skill you can use.