Weads,
Ray's books - Helicopter Aerodynamics Vol 1 & 2 are available all over the place these days -
Amazon in hard copy paperback.
Apple Books electronic.
They are published by
Eagle Eye Solutions LLC i.e. Shawn Coyle.
To have complete control of the aircraft you need to understand what is going on. Too much training these days is just based on "rote" and the details are missed or not understood.
You should have the ability to control and land the aircraft as easy as parking a car as per Crab and most people do. You can do it the hard way by "practice" or understand what is happening beforehand.
Ray's books are worth every penny.