Moodle 1.9: E-Learning Course Development (William H. Rice IV)
PACKT Publishing (www.packtpub.com)
ISBN 978-1-847193-53-7

This book is a comprehensive guide to Moodle 1.9, covering everything from installing Moodle and creating courses through to in-depth explanations of how Moodle works under the surface. One thing I enjoyed about this book is that it’s not just a collection of step-by-step guides, but it gives detailed information so you understand why you are doing it.