There's lots of info available and lots of books to read. I recomend reading books by Patrica O'Connell, Dr Sylvia Yin who focused on postive reinforcement,and learning about NILF (nothing in life is free). I'd also check out pack leader info because it has been debunked a long time ago to avoid confusion. https://positively.com/dog-training/myths-truths/pack-theory-debunked/