Renal and ureteral stones are among the most commonly encountered conditions in urology. As patients increasingly become obese and morbidly obese, the incidence of nephrolithiasis will only increase. Endourology is a technologically intensive subspecialty with near continual advancement of the tools available to treat stones. In order to stay on the cutting edge of management for stones, urologists must rapidly understand and incorporate advancements in technology and technique into clinical practice. Here, these high-volume stone surgeons demonstrate novel approaches to classification, visualization, and treatment of stones. Commentary on each video is provided by Khurshid R. Ghani, MD, assistant professor of urology at the University of Michigan, Ann Arbor, and by 'Y'tube Section Editor James M. Hotaling, MD, MS, assistant professor of surgery (urology) at the Center for Reconstructive Urology and Men's Health, University of Utah, Salt Lake City.