I'm not known for my patience - and I wanted to learn Scrivener fast.
Googling 'Scrivener training' led me to precisely what I needed: LearnScrivenerFast.
If you check out the link, you'll learn all about Joe (Joseph Michael - that's him smiling in the image) and the wonderful materials he has developed. His course is not cheap, but then it's a quality product.
I also discovered Udemy at #3 on the Google hit list....
Tutorial: Learning how to use a sophisticated piece of software like Scrivener takes time and energy and, if you are like me, both can be in short supply!
It's not just knowing what every item on every menu does, it's also appreciating how this magnificent software, with all its buttons and bells, might help a writer - like you and me - to achieve what we need to do: write that novel.