Computers have revolutionized almost everything we do, including theatrical design. The "old school" methods of designing and drafting with pencils and paper are disappearing. Even paper models of sets are less frequently seen as 3D modeling software has become both more powerful and easier to use, as well as more affordable. The purpose of this book is to teach scenic designers, particularly beginning designers, how to use SketchUp to help them visualize a scenic design for the stage. This book assumes two things about the reader: 1) the reader has no experience with any of the software that will be covered in this book, and 2) the user has a basic understanding of theatre and theatrical terms (like Upstage, Downstage, Stage Left, Stage Right). If you are a scenic designer, this book can help you visualize your designs and communicate them to the director and other members of the production team.