This book starts at beginner level, building the foundations of Electricity, AC Theory and Radio Theory. These foundations are progressively and slowly built upon and culminate at a solid Advanced Level. This is an ideal study program for those wanting an understanding electrical and radio theory. This study is suitable for Radio Technicians, Electrical Technicians, Technical Officers. Also suitable for those seeking to gain a qualification from Beginner to 'Advanced' Radio (Amateur) Experimenter; in any country. The book aims to provide a clear understanding of concepts. The goal is learning rather than memorising. The mathematics used is typical of Radio Technician level.