We live in the modern society where social media has become a global phenomenon and where individuals are continuously connected through mobile devices. A social media is any medium of communication that allows two-way interactive participation. It is a form of mass media communications on the Internet through which users share information, ideas, personal messages, and other contents. It can be regarded as the collection of Internet-based tools that help a user to connect, collaborate, and communicate with others in real time. It provides users with interactive services in which they can communicate with friends, family, and organizations all over the world. Social media have become an indispensable part of life, from shopping to electronic mails, education, and business tool. It provide users with the ability to collaborate and communicate with each other without any limitations by time or space. This book introduces beginners to social media. It is a comprehensive introductory text on the issues, ideas, theories, and problems on social media. It provides an overview of each of its applications so that beginners can understand social media and its increasing importance and relevance. It is a must-read book for anyone who wants to learn about social media, which is undoubtedly one of the most important technologies that has emerged in the last decade.