Free learning: Advance your knowledge with these Youtube channels
1. In a Nutshell

In a Nutshell is an entertaining and educational YouTube channel that creates animated videos about technology, politics, history, philosophy, and psychology.
Subscribe: https://www.youtube.com/c/inanutshell/videos
2. CrashCourse

CrashCourse creates and publishes high quality educational videos divided into more than 42 courses, all for free. Subjects covered include literature, world history, biology, philosophy, and more.
Subscribe: https://www.youtube.com/c/crashcourse/videos
3. TEDEd

TEDEd is an extension of the TEDx group in which they publish educational videos in collaboration with creators entailing topics in science, commerce, philosophy, math, and several others.
Subscribe: https://www.youtube.com/teded/videos
4. CGP Grey

CGP Grey is a UK-based educational channel that published video content covering many topics, specifically in politics, geography, economics, sociology, history, and culture.
Subscribe: https://www.youtube.com/greymatter/videos
5. Vsauce

Vsauce and through an elaborate team publish educational and informative videos that take into consideration audience recommendations. Topics they cover include mathematics, philosophy, psychology, technology, and popular culture.
Subscribe: https://www.youtube.com/c/vsauce1/videos
6. National Geographic

Known for its popular TV shows, National Geographic has an extensive library of videos on YouTube with educational videos entailing ecosystems, science, history, and geography. Their videos are entertaining and informative.
Subscribe: https://www.youtube.com/c/NatGeo/videos
7. Veritasium

Publishing videos since 2010, Veritasium covers interesting topics in an array of subjects. Science, engineering, logical reasoning skills, and education are all subjects covered in this channel.
Subscribe: https://www.youtube.com/c/veritasium/videos
8. SmarterEveryDay

SmarterEveryDay, from its name, intends to teach its audience science topics. Their videos are only focused on science, and they explain how several things work. They have been uploading videos to YouTube for 16 years, so they are highly experienced.
Subscribe: https://www.youtube.com/c/smartereveryday/videos
9. Science Channel

Through special focus on science topics, Science Channel uploads videos related to outer space, scientific exploration, new technologies, and earth science. They make their videos interesting and enjoyable.
Subscribe: https://www.youtube.com/sciencechannelclips/videos
10. SciShow

SciShow explain in entertaining videos why certain phenomena occur such as tornadoes or earthquakes. They cover old and recent scientific findings to help you expand you scientific knowledge, even if you do not study or work in a related field.
Subscribe: https://www.youtube.com/c/SciShow/videos