As a coach, when I go to a coaching clinic, I borrow from the presenters what seems to work for me, and disregard the rest.
I wonder if the same doesn't apply here. Read/watch from those willing to share what's worked for them, and see if some of it can work for you. If you pick up one single good thing, the $20 or whatever spent was well worth it.
When I first went trad in '88, Instinctive Shooting by Asbell was a great help. Do I use everything as he prescribed? No. But he certainly got me on the right track to finding my own best way of shooting. Plus the story about "Old Green" (his hunting rig) is worth the price of admission by itself.