This introductory book on programming introduces computer programming using C and Python programming languages on Microsoft Windows and Linux operating systems to beginners. The book assumes no familiarity with programming and teaches the basics of programming to its readers. It helps the readers to write programs to solve problems in computer science, finance, mathematics and physics.Unlike other introductory guides to programming, Write Your First Program focuses on the exact information that beginners are required to apply while creating practical programs. The book is organized in eight chapters with each chapter introducing a major programming topic, focusing on the concepts and then implementing them in both the languages. This book will teach you to write your first program and progress on to concepts such as working with data, decision making, persistent data storage and implementing mathematical operations. Apart from programming, the book also discusses version control systems and open source projects.The aim of the book is to focus on the programming logic and then see how the logic can be implemented using two different languages. Thus, it helps the readers to learn two vastly different ways of programming. This book is intended for all those who are interested to learn or sharpen their programming skills.