One book will not help you understand CIPD Level 5; rather, to acquire a thorough understanding of CIPD, many reference textbooks are needed (e.g., those used by your training or study provider). These reference books are essential to providing students with specific assistance in understanding CIPD Level 5 assignments. Some reference textbooks include Armstrong’s Handbook of Human Resources Management Practice, a foundational HRM reference textbook authored by author Armstrong that contains material related to various types of Human Resource Management (HRM) including HRM principles and theories as well as learning & development and employment law principles and theories, however, you may also need supporting/reference materials on this subject matter; therefore, if necessary, obtain the materials associated with your specialized field from your training or academic provider.