Photoshop is all about manipulating pixels, the basic unit that you work on in a Photoshop document. Everything in Photoshop is broken down into pixels.
This part explains how to work with pixels and the tools that Photoshop makes available to help you.
In Chapter 4, you learn about images size and image resolution. Your resolution choices depend on your output — a Web graphic looks great at one resolutions, but the same resolution won’t look good in print. Find out how to resize images here, too.
Chapter 5 explains color theory basics like why RGB is called RGB. Also, find out about color channels and the Channels palette. Discover Foreground and Background colors, how to define a color, how to use the Color palette and Color picker, how to use the Eyedropper tool, and more.
Chapter 6 explains the mysteries of printing and introduces a new Photoshop CS feature that enables you to create presentations in Adobe Acrobat PDF format.