There are so many music tutorials on Youtube that it can be hard to pick one that suits your needs.
Speaking for myself, in most cases I'll be looking for stuff that can help me solve specific issues that I run into whilst using a certain synth or fx plugin. Those how to video's actually aren't that hard to find. It gets harder however when you're looking for more generic stuff.
Music theory for example is such a topic. You can find a truckload of videos on that. But if you don't know what you don't know it can be hard to pin down which ones suit you. At the same time, explaining obvious stuff in a simple fashion can be a hard nut to crack for a teacher.
But not for Serge Rybak. This Beginners Crash Course video is a brilliant example how to do things properly!
He's using Ableton Live, but even if you're into another DAW you can learn a lot from this video.