I've published Learn to Play the Didjeridu as an ebook. For the ebook release, I've updated the original text with additional information based on 15 years of teaching classes and private courses to children and adults. I also added an introductory essay on the history of the instrument since being introduced globally, a chapter on didjeridu playing as a treatment for sleep apnea and a glossary of didjeridu terms which might be confusing to the newby. It's a little over 13,000 words and available at http://www.smashwords.com/books/view/84442 for an introductory price of just 99 cents. Formats downloadable include PDF, Epub, Mobi and others.