This document provides instructions for performing cardiopulmonary resuscitation (CPR) and using an automated external defibrillator (AED). It aims to teach participants how to assess an unconscious victim, perform chest compressions as part of CPR, and safely operate an AED. The background information emphasizes that cardiac arrests are common and that early CPR and defibrillation within 1-2 minutes can significantly increase survival rates. Step-by-step instructions then detail how to approach a victim, check for breathing and response, call for emergency help, open the airway, commence chest compressions, and use an AED according to audio instructions.