Telemedicine and telehealth have consistently been shown to be effective for remote areas or limited-resource locations, regular medical and surgical practice, primary care, second opinion, extreme conditions, major crises, and disaster management. The aim of this book is to bring all aspects of telemedicine and e-health to the reader, in a simple, make-sense approach, in one tome. The book is structured in four parts with 29 chapters written by the best experts in the field from around the world, including clinicians, scientists, and administrators of telemedicine programs. Part I deals with basic principles of telemedicine and telepresence. Historical journeys of telemedicine and strategies, building sustainable telemedicine and telehealth programs in the United States and in the Balkans, as well as incorporation of telemedicine in the current ongoing pandemic COVID-19 are well described and are must read.