AutoCad 2015 Contents. Chapter-1. 1. Duction to AutoCAD 2015. 2. Exploring the user interface. 3. Using the ribbon. 4. Changingworkspaces. 5. Customizing the user interface. 6. Editing command aliases. Chapter-2. 1. Opening, saving, and closing files. 2. Selecting drawing units. 3. Converting drawings to new units. 4. Using and creating templates. Chapter-3.