This document provides an overview of Computer Aided Design (CAD) software AutoCAD. It discusses that AutoCAD is 2D and 3D modeling software developed by Autodesk. The document outlines the primary goals, AutoCAD screen components, common commands for 2D and 3D modeling, and benefits of using CAD software like increased accuracy and ability to easily modify designs. Various topics covered include a brief history of AutoCAD versions, how to set drawing units, and examples of 2D objects that can be drawn.