This open-access book provides basic management knowledge in a concise and structured way. Fundamental aspects of management are described, based on which a model of the enterprise is outlined. This allows readers to find their way around easily, reflect, set new approaches in context, and examine them critically. The practical examples, the interpretation questions, and the short case studies at the end of each chapter facilitate the transition from theory to practice. Sustainability, corporate responsibility, and circular business have been extended for this second edition. Current practical examples have been included (e.g., UBS merger, Rolex, Nestlé, Logitech, Netflix, Ferrero), and company examples have been updated or replaced. In addition, the company model has been adapted, media have been added as stakeholders, and the environmental spheres, according to PESTEL, have been included. The chapter on corporate culture has been extended with additional models which rely on concepts of leadership style. This textbook has been recommended and developed for university courses in Germany, Austria and Switzerland. In addition, novice and experienced managers will find new inspiration and practical guidance supported by compelling examples.