This introduction presents an overview of the key concepts discussed in the subsequent chapters of this book. The book presents the historical development and evolution of Foley in the United States. It gives an overview of Foley in other countries, including Canada, England, France, Germany, Austria, Russia, Serbia, Italy, Spain, Brazil, Chile, Turkey, India, Pakistan, and Taiwan. The book offers a detailed guide for spotting, cueing, and editing Foley using the industrial filmmaking method as a blueprint that can be adapted to other types of media. It gives guidelines for and examples of various theories and methods for designing a Foley stage. The book discusses the role of the Foley and rerecording mixers, how they perceive the mission of Foley, and how they assist that mission. It gives insights and hints on how to master sync as a Foley artist. The book discusses Foley for animation, games, radio plays, and film trailers.