This book attempts to provide answers to questions such as: Who is a Hindu? What is Hinduism? Why do Hindus pray to different deities? What is the power of prayer and mantras? What do Hindus mean by karma, creation and reincarnation? How is Hinduism connected to nature and science? In today's world, when everyone is too busy to read and understand their religion, this book provides a basic, simple reference to understand the fundamental concept of Hinduism as what is Hinduism? This book has been written in a very simple, readable language to arouse the readers' interest in spirituality, regardless of their age.