The book introduces the basic operating skills of AutoCAD 2012, including the basics of AutoCAD 2012, 2D graphics, graphics editing, block & group, text, graphics filling and labeling, view operation and FAQ, examples of 2D drawing and 3D modeling. The book makes explanations through examples, enabling students to get familiar with the software features and drawing ideas. The classroom exercises and after-school exercises can expand students ability in practising and to improve their skills of using the software. 2D drawing examples can help students master the knowledge of construction machinery and enhance their abilities. The book can be used as a textbook by colleges and training organizations and can also serve as a reference book for self-study.