The book gives a compact review of numerical methods and a description of material behavior. These basics are applied to bars, beams, strut and tie models, plates, slabs and shells. Examples are developed for each structural type, and may be reproduced by open source software. Most problems are illustrated by examples which are solved by the program package ConFem, based on the freely available Python programming language. The ConFem source code together with the problem data is available under open source rules at concrete-fem.com.