One thing which students find frustrating about Software Engineering is understanding the complex language used in textbooks. Not many textbooks are user-friendly, which in turn, frustrates students. The author, Ranjot Singh, aimed to change this by creating a textbook using easy-to-understand language. This allows you to enjoy the learning process, as well as digest the information with ease. This book is ideal for students from Punjabi University Patiala studying the Bachelor of Computer Applications, however, it can be useful for anyone with an interest in Software Engineering. It begins with basic information regarding the paper ie. Lecture duration, paper duration and structure of the paper. Section A begins introducing The Problem Domain, Software engineering challenges and Software engineering approach. Section B outlines Software design, coding, testing and software maintenance. I hope you enjoy reading this book as much as I enjoyed writing it. Wishing you all the best in your studies. Ranjot Singh Chahal