This textbook provides a compact introduction to the field of commercial and corporate law. It clarifies central concepts, refers to relevant legal sources, and explains the underlying principles as well as the proper handling of these. In this way, individual connections are illuminated, and a fundamental understanding of the basics of the legal field is conveyed. Short learning units, clear didactic modules, and accompanying assessments ensure sustainable knowledge transfer. The book is aimed at anyone dealing with questions of commercial and corporate law in the context of their education and training (including as a minor) as well as their professional practice.