This document provides instructions for using Google Sketchup to create a basic 3D cube shape. It lists the materials needed which include a computer with Google Sketchup software installed. It then provides 11 steps to follow which include turning on the computer, searching for and opening Google Sketchup, selecting a template, using the draw rectangle and push/pull tools to make a 2D rectangle and extrude it into a 3D cube. The document concludes by stating that if a cube is present on the screen, the reader has learned the basics of using Google Sketchup.