A revealing guide to understanding the principles of Islam With more than 1.8 billion followers worldwide, Islam is one of the world's largest religions, but it is also one that is poorly understood by many Americans. Islam Explained offers an informative overview of the faith, helping those who are new to Islam foster cultural awareness while also providing those already familiar with it the opportunity to deepen their understanding. Whether you are looking to expand your own knowledge of Islam or just better understand the practices of Muslim friends, coworkers, and neighbors, this concise and essential guide provides a solid foundation for future study and conversation.