Semiconductors are the unacknowledged pillars of modern technology. During the last decade, semiconducting layered metal dichalcogenides are emerging as promising materials for a wide range of applications in optoelectronics and transistor technology. Because of these, knowledge of their electrical properties under conditions of variable temperature or pressure is important for such applications. Moreover, the exploration of matter at extreme conditions is a central theme in a broad range of scientific disciplines (e.g. material science chemistry, physics, and Earth and planetary science). Looking to these aspects, this book describes different method for crystal growth, experimental high pressure generation method, magnetoresistance studies and electrical resistivity measurement of metal chalcogenides at high pressure and low temperature.