Communication is a powerful tool for business, travel, or simple conversations with people globally. It is inevitable for professionals to deal with the latest technological knowledge armed with proficiency in the language medium, which will not only help them to understand the subject well but also reflect their in-depth knowledge of the subject when presenting. This book is the outcome of the authors' knowledge and long experience with classroom teaching of technical English. The materials in the book are meticulously designed to provide an edge in learning and communication to students and professionals. The book is a comprehensive study of oral and written skills in English language.