The law of general terms and conditions is of significant importance in the practice of contract design, yet it is often insufficiently covered in legal education. As a result, many lawyers who enter the profession after passing the bar exam or work in a company's legal department find themselves completely unprepared when tasked with commenting on the validity of general terms and conditions or drafting them for a client. This systematic comprehensive presentation of the law on general terms and conditions aids in case management by providing methodological guidance for drafting and reviewing general terms and conditions, numerous case examples with explanations as concrete aids for practical work, an overview of relevant case law on the most important practical issues, and a thorough treatment of common legal questions regarding general terms and conditions in sales contracts.