I just found this one in case you are still interested :
https://www.packtpub.com/ansible-configuration-management/book
I haven’t read this one, but my natural inclination is that these could get out of date reasonably quick.
I’d still encourage people to start with the official docs (and contribute to the official docs) versus someone thinking they should need an external book.
It’s not too hard to get started and things were written with that view in mind.
Folks should definitely look to Galaxy, ansible-examples, and the Guide section of the docs also.