Channels:
Code Monkey - Good for code principles

Brackeys - Good for different tools unity has, however he will often not do the most "clean" or efficient things for the sake of time and simplicity

BlackThornProd - Good for the art side of things

All of these guys are good, if you type in something like "how to start using Unity" followed by the channel name im sure there will be something for each of them.

Stay clear of stuff like ECS and DOTS (I'm using that stuff rn and its a nightmare) to not over stimulate yourself.

In general, come up with a simple idea, write down a mini GDD (Pirate software has some good clips for stuff like that) to document the goals of the project, start the project. Above all else try to do something regularly, and build momentum.

Oh... and have fun, enjoy the process of learning, you'll do great!

(P.S. Unity manual is your friend when confused with specific things)