This book is a compilation of chapters that discuss the most vital concepts in the field of biomass. It aims to provide the readers with thorough knowledge about this subject. Biomass is organic matter which is produced from living organisms, mainly from plants. It is used in two ways, either directly or by converting it into biofuel. This text is a valuable compilation of topics, ranging from the basic to the most complex theories and principles in the area of biomass. Through this book, we attempt to further enlighten the readers about the various techniques and technologies associated with this field. Different approaches, evaluations and methodologies have been included in it. This textbook is an essential guide for graduates and post-graduates in this field.