This document provides an introduction and overview of Adobe Photoshop. It discusses the history and development of Photoshop from its initial version in 1988 to modern versions. It also outlines some of Photoshop's main uses cases including photo editing, graphic and web design, engineering, science, and film/video. Finally, it demonstrates some basic tools in Photoshop like the Red Eye Tool, Healing Brush Tool, and Liquify filter.