Adobe Photoshop CS4 Introductory Concepts and Techniques - Shelly Cashman Series Author:Gary B. Shelly, Joy L. Starks Part of the highly successful Shelly Cashman series, ADOBE® PHOTOSHOP® CS4: COMPREHENSIVE CONCEPTS AND TECHNIQUES follows the proven Shelly Cashman step-by-step, screen-by-screen approach to learning the Photoshop CS4 software.