Also tutorials tutorials and tutorials. Watch a bunch.
But, Don't watch it for everything.
You need to know the Basics like:
-What are the core fundamentals/ What is the game engine based on.
-The libraries / language / UI and stuff.
If you felt fimiliar with the game engine, framework, etc. Please try to discover advance things and try to break stuff up, A lot of people suffer from tutorial hell, Try your best to get out of it.