I found "The Book of Shaders" to be an absolutely amazing resource for learning about what shaders do from a very basic level. Bonus: it's completely interactive and free online: https://thebookofshaders.com/

Unfortunately, they never finished it.

Gilbert Strang's lectures on Linear Algebra: https://ocw.mit.edu/courses/18-06-linear-algebra-spring-2010...

LinAlg was the only maths course I needed in my interdisciplinary study program. I had struggled to grasp maths in high school, but these lectures really made it click for me and I passed my university's class with a B+.

I've been struggling with wrapping my head around asynchronous programming with callbacks, promises and async/await in JS, however I think it's finally clicking after watching these YouTube videos and creating a document where I explain these concepts as if I'm teaching them to someone else:

* Philip Roberts's What the heck is the event loop anyway? - https://www.youtube.com/watch?v=8aGhZQkoFbQ

* The Story of Asynchronous JavaScript - https://www.youtube.com/watch?v=rivBfgaEyWQ

* JavaScript Callbacks, Promises, and Async / Await Explained - https://www.youtube.com/watch?v=JRNToFh3hxU

* Async Javascript Tutorial For Beginners (Callbacks, Promises, Async Await). - https://www.youtube.com/watch?v=_8gHHBlbziw

* Jake Archibald: In The Loop - setTimeout, micro tasks, requestAnimationFrame, requestIdleCallback, - https://www.youtube.com/watch?v=cCOL7MC4Pl0

Edit... I've been rewatching these videos, reading the MDN docs, the Eloquent JavaScript book, javascript.info, blogs about the subject, etc. This further proves you shouldn't limit yourself to a single resource, and instead fill up the laguna with water from different sources if you will.