For physics enthusiasts, I’d also suggest “floatheadphysics” for his depictions and sometimes cathartic presentation style. I love how he broke down special relativity in an easily understood way.

Then I’ve also really been enjoying “For The Love of Physics” for his style of showing some of the math. His style is more of a classroom presentation, but in a way that reminds me of my most effective professors that made their lessons as easy to consume as mac and cheese.

I’m inclined to hit some online courses someday, too, but, for now, these have been great for conceptual stuff and my curiosity vs. time balance.