Information about the title: Subject knowledge presented in an understandable and student-friendly manner, with factual information necessary for working through learning situations and passing the final exam. New: Review and comprehension questions ("All clear?") at the end of each chapter. Information about the series: The teaching material series for the vocational training of salespeople and retail merchants - completely revised and updated according to the revised KMK framework curriculum 2017. The proven action-oriented concept includes a subject knowledge book and a workbook for each year of training: Subject knowledge presented in an understandable and student-friendly manner, with factual information necessary for working through learning situations and passing the final exam. New: Review and comprehension questions ("All clear?") at the end of each chapter. Workbooks are uniformly structured, focusing on action-oriented learning situations.