Jwfacts is a good site for information.
I can remember when I first began to doubt Watchtower, I read absolutely everything I could find on Watchtower history. Whole websites, every single page. In particular: Watchtower Observer, Freeminds, Reachout, Carm, Watchtower Information Service, and many others.
Jwfacts was a bit too late for me, and I’ve only read bits of it. It if existed ten years earlier I am sure I would have read the whole website in a couple of days. But then, my attention span isn’t what it used to be.