This document provides an introduction to AutoCAD software. It discusses that AutoCAD is 2D and 3D modeling software developed by Autodesk. The latest version of AutoCAD is 2018. It describes the AutoCAD screen and interface, how the software works using a coordinate system, and some common 2D commands like lines, arcs, and circles. It also discusses isometric views, hatching, and benefits of using AutoCAD like creating designs quickly and accurately.