Using Moodle - Teaching with the Popular Open Source Course Management System by Jason Cole and Helen Foster is published by O'Reilly as part of the Community Press series.
The first edition of the book, written by Jason Cole and released in July 2005, is based on Moodle 1.4. The second edition, released in November 2007, has been updated to cover all the features in Moodle 1.8, such as the new roles and permissions system, blogs, messaging and the database module. Download the book
Good videos also on YouTube - I've created a playlist in YouTube to filter out the good from the rubbish. If you have your own recommendations from Moodle then I can add them if you email me the YouTube URL - my email address is: leeanne.patterson@wis.edu.hk
A number of schools in Hong Kong are using Moodle or are considering using it. I have created a Moodle Ning http://hkmoodle.ning.com which will help us share ideas and organise Moodle Moots