This document provides an overview of SketchUp, a 3D modeling software that allows students to design buildings and other objects. It can be used for visualizing geometry, architecture, and full 3D environments. The document provides examples of how SketchUp has been used by students to design packages, medieval castles, homes, and a "solar passive cabin" for a rock star client. Additional resources are included for learning more about SketchUp and complementary tools like Google Earth and the 3D Warehouse.