One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man.
Elbert Hubbard (U.S. author, 1856–1915)
Photoshop is the right hand of the game artist. Although there are many 3D applications, Photoshop pretty much stands alone as the 2D application of choice for game developers. The information in this book pertaining to Photoshop should apply to older versions of Photoshop, as I tried to stick to the basics—and those basics have been around for a while now.
I strongly encourage you to become familiar with every possible aspect of Photoshop. As you read this book, try the various tools that I mention. No amount of imagery can replace experimentation. See for yourself ...