Information on the volume: Learning fields 11, 13, 14. Information on the series: The series of textbooks for the training occupations of salesperson and retail salesperson is completely revised and updated for the amended KMK framework curriculum 2017. The proven action-oriented concept includes a technical subject and a workbook per training year. The technical subject is presented in a comprehensible and student-friendly form, with factual information necessary to work on the learning situations and to pass the final exam. New: Repetition and comprehension questions ("Everything clear?") at the end of each chapter. Workbooks are uniformly structured, featuring action-oriented learning situations with reference to the model company BESKA GmbH for each learning field. Worksheets and additional repetition and consolidation tasks are included to ensure learning success and the acquisition of skills required in the framework curriculum.