Education as a process is the basis for knowledge, skills and development. Development of the individual, family, society, community, society and nation is only possible through education. Education is very important to revolutionize the world as a whole. Formally , it requires a teacher to impart the knowledge to the student. But in today’s rapidly changing environment Educational Technology plays an important role in how is education is being imparted. Developments are happening on daily basis in the field of technology which has helped the students to interact with the teachers from the remote regions also. Now anybody can access the courses and study materials from anywhere which has helped the dropouts, working professionals to complete their studies. Technology has helped achieving this and it has made distance education possible.World has become a global village. This book tries to explore the various sources, technologies, institutions etc which are promoting the Distance Education.. The book has been designed for the beginners in the field of education to provide comprehensive coverage of components of Distance Education.