Very Imformative. Everything you need to know. Hundreds of websites you can use for information, hints, tips, tricks, products, downloadable programs, etc. Step by step instructions for how to use every feature and application on your phone. There was so many features that I didn't even know I had until I got this book. The little book that comes with the phone only brushes the service of what this phone can do. Must have book for anyone with a Treo!
