I also had to read a lot about him when I started recovery. I was so into my disease (codependency) that I had to reprogram myself. I had to see what it was that I was detaching from .That was my process. Now after 2 years I KNOW what I am detaching from. Knowledge is power. The process taught me that it makes NO sense whatsoever to react to something that is not real /insanity/ quacking or whatever else we can call it.
Now I refrain from dwelling on his issues - and I bring myself back to ME quickly when I find my mind wandering off to "how could he" or "why did he". I am powerless over others.
I had to learn who he was in order to find me also. Hopes it makes sense.