In The Art Model's Handbook I think Andrew, an experienced life and photography model, really captured a lot of topics essential to both models, artists, art teachers and everyone involved in figurative art.
Models play such a crucial part of any figurative artist’s work and with no real training out there, this book is definitely long overdue. Available from Amazon
Best of luck, Andrew!
The cover is a painting I have done of the author, Andrew Cahner in 2004