This is a textbook introduction to morphological theory in the context of English. This introduction to morphology offers graduate students and advanced undergraduate students in linguistics an accessible entry point to the primary literature in the field of morphology. The book specifically focuses on generative theories of morphology. It offers a thorough introduction to the many issues which have shaped the field of morphology over the last few decades and in doing so prepares students for further reading and research in the subject. Topics covered include derivation versus inflection, lexical versus syntactic models of morphology, synthetic compounds and storage versus computation. It provides an entry point to the primary literature in the field of morphology. It includes suggestions for further reading into this complex area. It includes exercises designed to test understanding of the key theories and issues.