I've read quite a few books on CSA recovery. And one of the best is Victims no Longer by Mike Lew. While it does have a chapter "For (and about) Partners, Family and Friends" he also states in the begining of the chapter "Unfortunately, one chapter cannot deal adequately with so complex a situation." While it has really good information in it, it is looking at things with a perspective of a survivor trying to heal.
There is a preview to the book "Allies in Healing" and you can see what chapters are in the book.http://www.amazon.com/exec/obidos/ASIN/0060968834/havoca-20#_
Depending on where you are a number of books could be available from your local library. But few will even come close to what you need right now.
I think what you have to do is to protect yourself. You have, and are, suffering from abuse. And all the time trying to help your abuser.
Most of us that suffered CSA developed coping mechanisms. And they helped us get through the abuse. I think you have to have some seperation, if not physical at least emotional. You need time to heal. Only then do I think you can consider helping him if you still choose to.
If you don't have anyone locally you can turn to then see if someone here will help you, communicating with private messages.