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.

The Linux Experiment - Making the Linux desktop accessible: no techno lingo, no command line voodoo, no super technical content.

Blender guru - Free and commercial tutorials

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.

Khan Academy - Khan Academy offers online tools to help students learn about a variety of important school subjects. Tools include videos, practice exercises, and materials for instructors. Read more about Khan Academy.

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.