Here is a list of great books on animation, digital and traditional. There are many more, but these are considered to be some of the best.
Timing for Animation
By: Harold Whitaker; John Halas
Web ISBN-13: 978-1-136-13461-6
(Available online or traditionally)
Design Essentials for the Motion Media Artist
By: Angie Taylor
Print ISBN-13: 978-0-240-81181-9
(Available online or traditionally)
The Animator’s Survival Kit: A Manual of Methods, Principles, and Formulas for Classical, Computer, Games, Stop Motion, and Internet Animators
By: Richard Williams
Traditional
The Encyclopedia of Animation Techniques
Richard Taylor
Running Press, Philadelphia
Traditional
