Nursing is a health care professional sector concerned with the care of individuals, families, and communities so that they can achieve, recover and maintain quality of life and optimal health. It aims to ensure care for all patients and maintain their credentials, code of ethics, standards, and competencies. Some of the primary branches of nursing are cardiac nursing, perioperative nursing, orthopedic nursing, obstetrical nursing, palliative care, etc. Nursing has the widest range of all healthcare professions. It is divided depending on the needs of the person being nursed. The major populations in nursing are adult-gerontology, paediatrics, neonatal, informatics. This book provides comprehensive insights into the field of nursing. It traces the progress of this field and highlights some of its key concepts and applications. This book is an essential guide for both academicians and those who wish to pursue this discipline further.