My brother is about to have his first child with his wife of 12 years. They've had a lot of issues with their marriage, including a heavy influence of severe mental illness (his) and while he grew up quite alpha, the dynamics of his relationship because of his mental illness meant he was hardly a FO let alone captain for many years.

I'm relatively old to RP but quite new to MRP and it's helped me immensely in a short time. I want to introduce MRP to my brother to help him maintain frame and further establish himself as captain of his ship as he enters fatherhood.

Problem is, I don't think he'll be receptive to diving into the sub and sidebar straight away. I'm thinking I could start by gifting him a book.

So my question is, what book should I give to him as a gateway? NMMNG? MAP? Something else?

Tl;dr my brother is going to be a father. What book is a good introduction to MRP for him as a gateway at this time in his life?