HARRY G MOND MBBS, MD, PhD, FRACP, FCSANZ, FACC, FHRS, FAPHRS is an Associate Professor at Melbourne and Monash Universities in Melbourne Australia with an interest in cardiac implantable electronic devices, electrocardiography and Holter monitoring. He has previously authored four books and over 290 manuscripts and book chapters. He is the founder and current Medical Director of CardioScan Services Pty Ltd, which is involved in reporting Holter Monitoring in Asia, Australia, North America, Africa, and UK. This text is a testament to his experience and passion for interpreting and teaching electrocardiography and is written in a style that is accessible for any clinician or student wanting to improve their knowledge on this topic.