Here are some books on acting that I found quite helpful. All of them are linked to their corresponding pages on Amazon.com so that it's easy to track them down if you'd like to buy them.

How to Be a Working Actor : By Mari Lyn Henry, Lynne Rogers

Getting The Part : By Judith Searle

Sanford Meisner on Acting - By Sanford Meisner : This is arguably one of the best books on the technique of acting.

The Actor's Encyclopedia of Casting Directors - By Karen Kondazian : This is a fascinating collection of interviews with major casting directors. They share their opinions and ideas and their addresses are included, as well as pictures. A wonderful resource, especially if you live in LA, but it's educational for any actor.

Your Film Acting Career - By M.K. Lewis & Rosemary R. Lewis : This book is really, really good for explaining the business part of acting. Although, it applies mostly to Los Angeles' way of doing things.

Audition - By Michael Shurtleff : This tells you pretty much everything you've ever wanted to know about doing an awesome audition.

Acting In Film - By Michael Caine : Academy Award-winning actor Michael Caine shares his knowledge of acting in front of a camera. There's lots of wonderful tips in this book.

Monologues For Young Actors - Compiled By Lorraine Cohen : If you're a young actor and you're looking for a monologue, this book has some pretty good ones it.