The Handbook of BLS, Basic Life Support is a practical guide designed to provide healthcare professionals, students, and even laypersons with essential knowledge and skills to respond effectively during life-threatening emergencies. It focuses on the core principles of early recognition, activation of emergency response systems, high-quality chest compressions, rescue breathing, and the use of automated external defibrillators (AEDs). The handbook emphasizes a systematic approach to adult, pediatric, and infant resuscitation while simplifying guidelines into easy-to-follow steps. In addition to clinical techniques, it often highlights the importance of teamwork, communication, and timely interventions in improving survival outcomes. Illustrated algorithms, case examples, and quick reference tables make it a user-friendly resource for both training and bedside use. Overall, The Handbook of BLS serves as a reliable companion for anyone committed to saving lives through prompt and effective resuscitation efforts. A unique feature of this handbook is the inclusion of a short Hindi summary at the end of every chapter, ensuring that language barriers do not hinder learning. By blending scientific accuracy with user-friendly presentation, the handbook serves as an accessible resource for training, reference, and bedside use, ultimately helping to improve survival outcomes in critical situations.