This book focuses on the main aspects of animation that every animator would (and should) focus on - namely, the basics of character motion, timings and basic animation mechanics.
The content is written in an easy-to-read, 'University lecture'-style, and is applicable to all type of animator - whether it be stop-frame, 2D drawn, digital or 3D CG. It explains the very basics from the beginnings of starting in animation, and breaks each area into informative passages and diagrams. The best part is that Webster offers exercises to practise your skills and the book comes with a CD with example documents used in the production process and example animations of most of the key animations.
Overall, I'd recommend it for any animator, regardless of how experienced, as this will help to hone skills and remember those important basics we all started from.