Book excerpt: This book has been prepared to serve as a textbook for students taking professional courses in the discipline of extension education in all veterinary and fisheries colleges and State veterinary units as well as agricultural universities in India. Various concepts, philosophy, principles and methods of extension education programme planning, private extension, information and communication technologies and rural developmental programmes have been described at a functional level so as to help extension functionaries properly and effectively. Salient Features - This book shall serve as a handbook in the relevant government departments, Non-governmental organizations, co-operatives and all other input agencies, as well as research institutes and Krishi Vigyan Kendras in respect of their extension work critically.