Read, watch, attend as many as you can. Take what you like and leave what you don't. I've adopted things from Ienatsch, Parks, Pridmore, and Code. Probably in that order.
But the problem as I see it is the beginner rider. If the various sources are presenting opposite ideas, not just slightly different, totally opposing, how does the beginner rider know which is correct?
The knowledgeable rider can work their way through picking and choosing. Perhaps just reinforcing what they already believe to be correct, picking up the odd 'gem'.
As an example, one of the most basic riding concepts. You have one source saying always
roll on the gas in a corner with a strong warning rolling off will overload the front tire with loss of traction and likely crash. In contrast other sources are actively promoting 'throttle steering' (which involves deliberately rolling off the throttle at times) to control your line through a corner. How does the beginner rider make sense of these two completely different and seemingly irreconcilable ideas?
Not to leave punters pondering the above conflicting ideas, to me Moto3 racing provides the answer. Routinely riders on the very limits of traction get checked by other riders in corners in that crowded close racing. They clearly 'chop' the gas when forced to 'sit up' in the corner. What generally happens? Does the front tire load up and they instantly slide out, or if not physically knocked out, after a few shimmies of the bike quickly regathers and continue on? These are guys riding on the very limits of traction, not a typical road rider well short of the traction limits of modern quality sport/touring tires.