English as a language is spoken and taught in most of the countries of the world. People around the world are learning English as a second language. The level of learning may vary based on the proficiency of the individual. Teaching English as a language involves teaching all aspects such as pronunciation, vocabulary, grammar, etc. This book provides comprehensive insights into the field of English language teaching. As this field is emerging at a rapid pace, the contents of this book will help the readers understand the modern concepts and applications of the subject.