Blender guru - Free and commercial tutorials
The Linux Experiment - Making the Linux desktop accessible: no techno lingo, no command line voodoo, no super technical 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.
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.
Egee - Informative and entertaining videos about Open Source Software, Gaming, and other loosely related things.
cgmasters - CG Masters is an art training platform for everything Blender. We offer high quality and large-scale training courses as well as many free video tutorials on all topics, including modeling, texturing, animation, game creation, and 3D printing.