David Busch's Canon Powershot G15 Guide to Digital Photography from Cengage Course Technology is a color illustrated book that takes you through all the basic features and functions of this 12 megapixel camera. Not only will it teach you what all the switches, dials and buttons do, but it will tell you how, where and when to use them to achieve the kind of images you've always wanted. Once you've mastered the setup of the camera, the book delves into file formats, resolution and other advanced topics. The book is accompanied by a G15 Roadmap that is a quick-reference guide to everything covered in the book.
Cengage Course Tech.
Book: David Busch's Canon Powershot G15 Guide to Digital Photography
Canon Powershot G15 Roadmap