Nikon's new D3100 is a perfect entry-level DSLR. This book is for anyone who upgrades from their point-and-shoot, or for anyone who wants to jump into photography with the control and capabilities of a DSLR but without the high price. There's the manual, of course, as well as competing books, and while they all explain, often in 400+ pages, what the camera can do, none of them shows exactly how to use the camera to create great images!