This document provides an introduction to the concepts of nursing. It defines nursing as a service that includes caring for the sick, maintaining patient health and environment, providing health education, and promoting health. Nursing is described as an art, science, and vocation requiring head, heart and hands. Florence Nightingale is cited as the founder of modern nursing. Her definition of nursing focused on restoring health and preventing injury and disease. The document discusses various nursing theories that have developed the knowledge base of nursing. It provides definitions of nursing from experts and the International Council of Nurses. Key nursing principles around safety, effectiveness, comfort, and individualized care are outlined. The document concludes with an overview of nursing education opportunities and scopes of practice.