Flavorwire

With Felicia Day’s Geek & Sundry and Chris Hardwick’s Nerdist channels both set to debut next month, it’s shaping up to be a great season for YouTube users who like new, original content. There are already a lot of really great channels out there, of course, but they tend to get buried under the 35 hours’ worth of video that are uploaded to YouTube every single minute, so we’re guessing you haven’t seen all of them. Don’t stress about what you’re missing, though — we’ve rounded up some of our favorites for you, including everything from history lectures to comedy sketches. With any luck you’ll be all caught up on some of the best videos before Nerdist and Geek & Sundry explode with content April 2nd.

Vlogbrothers, Crash Course, and Sci Show

In 2007, brothers John and Hank Green began a YouTube video channel in an effort to connect to one another without using email. The show they created became massively popular, to the point that it has its own fandom (called “Nerdfighters”) and various spin-off channels. It might take some effort to familiarize yourself with the main Vlogbrothers feed, as it’s full of inside jokes, references, and story lines, but it’s worth catching up! In the meantime, you don’t need any prior knowledge to get involved with Sci Show, Hank Green’s program about various scientific topics, and Crash Course, in which John and Hank offer engaging lectures on history and biology, respectively. The above is John’s introductory video on the Agricultural Revolution, complete with a giant globe and adorable cartoon pictograms.