This manual has established an excellent position as a textbook for engineering students and as a standard reference work in business administration, particularly in management, for practitioners of all educational backgrounds and industries. High practical relevance: The work has been written by practitioners for practitioners. Comprehensive management knowledge: The entire scope of leadership knowledge, combined with leadership techniques, is presented. Immediate applicability: Practical relevance, extensive business knowledge, and leadership techniques allow for quick and successful implementation of the examples provided. Above all, a current chapter on the introduction of the Euro has been added, describing the impact of the currency changeover on various business areas.