The present book has certainly been a selection by the time itself, not by the choice of the author himself. The book has been in full compliance with the course guidelines delineated by the ICAR, New Delhi. It will certainly be followed by the UG & PG students, research scholars, academicians and the teachers of all the Universities across the country and abroad. The book has accommodated all possible innovative aspects of training of extension sciences along with its basic and classical contents. The chapterisation being: Part: I- Training: 1. Training and Development; 2. Methods of Training; 3. The trainer