This document provides instructions for performing cardiopulmonary resuscitation (CPR) to save someone's life in an emergency situation. It outlines the basic steps to take which are to protect the injured person, alert emergency services, and help by providing CPR including 30 chest compressions followed by 2 breaths. It emphasizes that survival depends on bystanders who are willing and able to perform CPR until emergency responders arrive with an automated external defibrillator if needed.