This document provides an introduction to basic first aid principles. It defines first aid as help given to sick or injured people until full medical treatment arrives, including initial care for illnesses and injuries. The main aims of first aid are to preserve life, prevent conditions from worsening if possible, and promote recovery. It outlines the roles of a first aider in managing incidents, assessing casualties, obtaining further help, providing treatment, and record keeping. It stresses the importance of calling emergency services and giving clear information. Proper incident management and basic infection control procedures are also covered.