Learn to draw step by step
by Debra Kauffman Yaun
This is an awesome guide to drawing faces including how to express light and shadow, the basic proportions of different faces, the bone and muscle structure beneath the skin and how it affects what is visible, and the details of individual features.
Excellent projects involving many different types and ages of faces are included to assist you in honing your skills.
I received an electronic copy through NetGalley in exchange for an honest review. 5/5 stars.