The book is a concise explanation of nitrogen containing functional groups especially amines and its derivatives. The contents also cover history, preparations, physical and chemical properties of ammines. The book focuses on various reactions involved with amino group. This is a second addition with contains advanced content of spectroscopy. The contents are explained in a very lucid language that may be very useful for the students to understand the subject more clearly. I am very thankful to my colleagues for their valuable support, suggestions and guidance during the course of writing this book. I hope this book come up with their and students’ expectations.