A superconductor is described as a substance capable of becoming superconducting at sufficiently low temperatures. This book provides an analysis of significant complications faced in the field of superconductors. It consists of information obtained through extensive research carried out by the contributing authors over a long period of time. The book elaborately elucidates the basic structural and electrical properties of superconductors along with methodologies for researching these properties. It efficiently encompasses the advanced technologies and concepts of superconductivity and is intended to target a wide spectrum of readers interested in studying about superconductors.