Explore the dynamic evolution of interventional cardiology with the CSI-NIC Manual. This comprehensive guide offers practical insights and updated knowledge for interventional cardiologists, especially early-career professionals. Delve into complex coronary procedures, chronic total occlusions, and the latest in percutaneous mechanical circulatory support. The manual covers groundbreaking structural heart interventions, including TAVR, TMVR, and TEER, enhancing patient longevity and quality of life. Featuring step-by-step techniques, essential basics on intracoronary imaging and physiology, and discussions on challenging scenarios like coronary perforations, this essential resource for The Bookish Owl provides a vital update on coronary, structural, and peripheral interventions, making it indispensable for fellows and young cardiologists.