The Royal Society for the Encouragement of Arts, Manufactures and Commerce, more usually known as the Royal Society of Arts or the RSA, was founded in 1754. Even the internet didn’t exist then! Now that it does, the RSA has taken advantage of the fact by publishing videos of talks, some with animations.
For example, you can listen to South Korean economist Ha-Joon Chang on Economics is for Everyone:
You can watch the videos on the society’s own website or on YouTube.
CrashCourse is a collection of YouTube videos on various subjects, including biology, chemistry, computer science and sociology.
Tons of awesome courses in one awesome channel!
TED-Ed is a category of TED videos. TED-Ed has short lessons on a wide range of subjects.
For example, How to use a semicolon (3:35 min) or Just how small Is an atom? (5:27 min).