TED Talks - TED Talks are influential videos from expert speakers on education, business, science, tech and creativity, with subtitles in 100+ languages. Ideas free to stream and download.

Level1Linux - The Level1Techs team is very knowledgeable while stilling being sociable as content creators. Wendell in-particular is often the feature figure of the Level1Linux content.

Udemy - Online Courses - Learn Anything, On Your Schedule

Bryan Lunduke - Bryan Lunduke is a former Software Developer, former Software Tester, Vice President, former Linux marketing guy, former writer for Network World, former openSUSE Board Member, and a long forum Linux discussion host on YouTube.

Smarter Every Day - Smarter Every Day is a channel run by Destin, who is a University of Alabama engineer who provides in-depth analysis videos of various scientific and engineering marvels of the world around us.

Egee - Informative and entertaining videos about Open Source Software, Gaming, and other loosely related things.