The Transgender Child by Stephanie Brill and Rachel Pepper
This is a great introductory text that talks about issues that come up when your child is trans* and how to handle them. It discusses how to manage school systems, what medical transition options are available, and how to navigate the medical system. It also offers support to parents who are struggling with the thought of their child being trans*.
The High Conflict Couple by Alan Fruzzetti
This is a great resource on improving your relationship, whether you have a lot of conflict or just want to connect more with one another. Dr. Fruzzetti utilizes concepts from DBT within the context of relationships.