A great time-saving AutoCAD tool that is under-appreciated is Quick Select. With this tool you can select all objects having a property that you specify, and the options for specifying that property are practically endless. Quick Select works on . . .
This map of the AutoCAD interface from the Autodesk website is a good reference when we talk about the various parts of the screen.
Identify a task or activity that you repeat frequently in the course of a day’s work. Find a way to make the task go faster, smoother, and with less effort, thought, and stress. Repeat.