Am I the only one who thinks that the classic music notation is 3x harder to learn than the basic music theory (without the rules of notation)?
I think that you can learn music theory (to play an instrument or to compose music e.g. in a "piano roll tool" / MIDI editor) much faster if you skip the classic notation. And I think that it is even better to learn the notation AFTER you understand the music theory.
I even made my own guide to music :D https://www.jampea.com/learn
https://youtu.be/Eq3bUFgEcb4 explains why music notation is the way it is. There are very good reasons for it.
The parts that are really weird (like the C clef) have mostly been obsoleted, unless you play the viola I guess.
It's all about the integers modulo 12. Classical notation obscures that (while making it easier to figure out which of the integers modulo 12 you're using, minus being able to assign them to integers in an obvious way).
This is a bit off topic, but since you mentioned your guide: I hope this doesn't come off as hostile, but the guide you linked contains a number of inaccuracies and oversimplifications - it's kind of naive in an endearing way, but also leaves the reader with the impression that it covers all there is to music. I guess what I'm saying is it's fine to restrict yourself in what you include in the guide, or even simplify things, but it should be clear that the topic (i.e. music) is far richer and more complex.