Rig it Right! breaks down rigging so that you can achieve a fundamental understanding of the concept.
The author will get you up and rigging with step-by-step tutorials covering multiple animation control types, connection methods, interactive skinning, BlendShapes, edgeloops, and joint placement, to name a few.
The concept of a bi-ped is explored as a human compared to a bird character allowing you to see that a bi-ped is a bi-ped and how to problem solve for the limbs at hand.
Rig it Right! will take you to a more advanced level where you will learn how to create stretchy rigs with invisible control systems and use that to create your own types of rigs.