I have the book "Helping Your Kids Cope with Divorce the Sandcastles Way" by M. Gary Neuman.
I got a lot out of it.
My older kids are only 9yo and 11yo so they still let me read to them. I have another book that I read to them and while they didn't talk with me, it was nice to sort of go over the issues with them in this very non-confrontational way. I only read it when they asked so that worked for us. It is an easy read if he wanted to read something himself. Let me know if you want the title. It is by kids for kids.