SketchUp is a program that is used to make 3D models. It is often used to design the outsides and insides of houses, but it can be used to design other types of things as well. In fact, if you become skilled enough at using Sketchup, you may eventually be able to design something and then make your creation real by using our 3D printer. Before you can do that, however, you will need to master the basics of Sketchup.