This book is to consolidate all the Units of the Syllabus of Human Resource Development to help the students and teachers to easily understand the concepts of HRD. Our attempt through this book is to provide crisp, clear and easy to understand concepts of HRD which will help them during the preparation of their examination. The text book is part of the M.Com syllabus of Ranchi University and also shall prove to be informative for BBA, BBM, B.Com, MBA and MPM students. The first edition of this book consists of three units associated with Human Resource Development namely its Introduction, HRD Processes that are commonly used and Activities and Application of HRD. Human Resource Development is the part of human resource management that specifically deals with training and development of the employees in the organization. This book provides an understanding of the concept of Human Resource Development (HRD) system, related mechanisms and the changing boundaries of Human Resource Development (HRD).