Find the best AutoCAD lessons, classes, and instructors at HeyKiki and learn how to use AutoCAD. AutoCAD is a computer application for computer aided design, or CAD, and is used for drafting models in 2D and 3D. CAD software is used by many industrial design and architecture professionals. In-person and online tutorials also exist for beginner, intermediate, and advanced users. With 3D printing becoming very popular, there are many opportunities that can lie ahead for those who grasp this technology.