Hey Sadie, I have been in the forum from the very beginning and have been a moderator and admin for almost ten years now - but I have never heard of an AND book. In case such a book exists, it is probabl not connected to the AND forum.
We have been thinking about writing a book on several occasions. However, we have decided not to. One reason is that we thought that the very thing that makes AND special is the dialogue and the discussions between different people who all bring ther very unique perspective.
If you are interested in reading more and don't know where to start, here I have collected links to some threads
that I think are particularly nice.