This text is a comprehensive guide for beginners with minimal experience interpreting ECGs. The chapters provide a basic understanding of the components of an ECG as well as introduce the important topics of acute myocardial infarction, hypertrophy, and bundle branch blocks. Real-life, full-size, four-color ECGs with basic interpretations are included to help students put it all together. Additional resources are available at www.12LeadECG.com.