The book is a self-taught tutorial on one of the best CAD in the environment COMPASS-3D V13, designed to perform design documentation, building 3D-models, assemblies and sheet parts. According to the results of the All-Russian competition in 2004 (g. Moscow) the first edition of this book was awarded the prize for the victory in the nomination "The best educational and methodological development for the use of KOMPAS-3D" . For the first time, this eighth edition provides examples of the performance of strength calculations by the finite element method using the built-in module of the APM FEM strength analysis system, by STC APM . The publication is intended for all novice users - schoolchildren, students of colleges and universities, design engineers who have not previously worked with this CAD