great facial modeling/animation book

Stop Staring: Facial Modeling and Animation Done Right is an awesome book by Jason Osipa when working with a character's head in 3d. It shows you how to model the head, step by step, with the correct topology for animation. The best part of the book is the section on creating extremely easy manipulated controls for blendshapes that can really save people's lives from sliding up and down in the blendshape attribute editor.