This book is everything it claims to be. The printout of Canon's pdf, hole-punched, in a binder on my computer books shelf does not suffice. Canon's manual is a reference book. White's book serves as a proper tutorial which I read at my leisure and also bring along with the camera if I want. For me it is worth the extra money to have the actual book. I keep the pdf of Canon's manual on my computer for searching fast. White's book is very readable and clear. And the layout and photos are very pleasing, which is important to me. By perusing the book, in just 24 hours I learned so much. I did not understand all the differences in SD cards - see pp 19-24. That in itself justified my getting this book. I already purchased and have been using the eye-fi card from reading a preview of the book. I look forward to learning all about the menus and setting up the shortcuts to my favorite menus. I highly recommend this book. To me it is a required "accessory" for anyone who wants to get the most out of the fantastic Canon PowerShot S95 10 MP Digital Camera with 3.8x Wide Angle Optical Image Stabilized Zoom and 3.0-Inch inch LCD camera.