Whenever I need to learn background for a new novel I’m going to teach or just want to understand more about a particular era of history, one of my first stops is Crash Course, where VlogBrothers Hank and John Green (yes, that John Green, as in Fault in Our Stars author John Green) offer a treasure trove of insight and delight.
Their YouTube channel features 10-to-15-minute high-octane segments of John Green discussing literature and world history, while Hank Green covers the sciences. Like listening to your favorite professor lecture after seven cups of coffee, it’s fast, filled with random side references, and makes you glad you didn’t ditch class.

Here’s John Green doing his thing:
Excited? Yeah, I knew you would be.
Teach on, everyone.