The target audience of this is senior undergraduate and graduate students, researchers, and engineering practitioners who are about to enter or entering the fields of nanofiber, nanofiber materials, electrospinning, and the like. This book is expected to prepare the readers, rather than providing the details of any specifics. This type of book is necessary because many researchers in training need basics to jump start the projects related to the research topics above. They also need to understand the potential applications to be direct their research. However, this type of book is missing, regardless of many handbooks or books focused on a specific field. The first half of the book introduces the basics of electrospinning and nanofiber technologies, leading the readers into the field step by step. It is expected to set a solid foundation for researchers in training (e.g. graduate students) before the jump into the particular research project (e.g. PhD thesis project). The contents are ordered such way that junior researchers normally follow. This book can also be used as a general reference book for those who are interested in the subjects. Each chapter is written as independent as possible, with references listed at the end of the chapter. Readers who can dig deep into the field after reading the chapters and the references listed.