The workbook "Mitsprache - German as a Second Language" in its first edition from 2017 offers a comprehensive revision of the DaZ language course. It is aimed at learners who are acquiring German as a second language and places particular emphasis on a professional connection. The conceptual realignment includes a completely new chapter structure, organized into various competency areas. This allows for a targeted and structured approach to learning the German language. The transparent layout of the workbook facilitates access to the content and promotes independent learning. Additionally, the new four-color design creates an appealing and motivating learning environment, which is especially suitable for language support in regular classes.