This book presents a comprehensive and traditional form of Aikido. It includes an extremely detailed and complete version of all the exam programs from 6th kyu to 4th dan, an illustrated nomenclature of the main techniques, steps and attacks of Aikido as well as hints on how to apply its philosophical principles to your practice. The author teaches Aikido in parallel to two other art forms: Kashima Shinden Jikishinkage ryu Hojo no kata which uses a heavy wooden sword and Japanese yoga - Genkikai. These three arts together are called Aikido sanshinkai and they are complementary to each other. They represent a complete path to personal development. This book does not replace the practice of the art; however it can be a useful addition for any aikidoka wishing to deepen his or her technical and intellectual knowledge. The feel of the art can only partially be transmitted by paper. Consulting this book cannot compete with the act of physical training. This book is the result of long and intensive work. Moreover, it is the fruitful result of a successful collaboration between the author, his family and his students. The knowledge inside is precious, the result of several years of training, research and experiments and constitutes a new wave of knowledge from masters to pupils. The book also covers the topic of ki-energy and explains how to use it in order to improve Aikido practice. The author of this work, 5th black belt aikikai, mathematician and PhD in statistics, studies daily and with passion the three arts (Aikido, Japanese yoga and Hojo), transmitted by his Masters more than 20 years ago. He has also written two more works in addition to this called "Japanese yoga - Genkikai" and "Aikido Buki Waza: The use of weapons in Aikido". He teaches in his dojos in Neuchâtel and Biel (Switzerland), attends and gives training seminars on all three arts in Switzerland and abroad.