Buying a Youtube course for anything is stupid.
Fact 1: everything is explained on Youtube itself. People recorded their own videos with complete correct paths.
This happening for years, there is probably more videos about that, than you will earn for your whole life out of faceless channels.
Fact 2: any Youtube method to earn money can be copied and tracked. No guides about it, but possible.
Why would you buy some course, when a single video can cover it better, because people are trying to provide quality content.
No course will do it better, just even more messy with video parts and over-delivery with some unnecessary bullshit.
But if you are just lazy and want to pay instead of 2min research, that's fine, and stupid.
For those who want to know how:
Filter content for this year, use good keywords (I won't spoil) make your brain work something.