This book is a simple introduction to Quantum Information Processing (QIP) for non-experts. It is accessible to undergraduates, postgraduates, and scientists from "non-physics" disciplines such as engineering, computer science, and chemistry with interest in learning about QIP. The book uses simple examples (instead of technical details) to bring out the key features of QIP, which makes the book a useful resource for instructors as well. Introduction to Quantum Information Processing begins with a discussion of the very basic ideas of QIP and the underpinning quantum theory needed to understand them. The fundamental aspects of quantum theory, which play center stage in QIP, are presented and illustrated with simple examples. The book continues with a presentation of the various applications and algorithms of QIP, and finishes with a discussion on the future of a possible quantum information technology industry. There are no competing introductory texts for Quantum Information Processing on the market. *Authors are world renowned and part of a leading industry research team at Hewlett Packard. *An excellent course text for undergraduate students in physics or related scientific disciplines. *An excellent introduction for scientists and engineers outside of QIP but with interest in learning about the field.