Book excerpt: This book is a comprehensive preparation, study and test tool for the remote pilot certificate ("Unmanned Aircraft General – Small") FAA Knowledge Exam. Topics covered are FAA regulations, the National Airspace System, weather, loading and performance, and operations. This book is particularly helpful for drone operators interested in earning a remote pilot certificate, for Remote Pilot Aircraft (RPA) applicants, unmanned aircraft system (UAS) training programs preparing applicants for FAA exams, self-study readers interested in learning more about commercial unmanned aircraft operations, and existing (manned aircraft) pilots who want to learn more about the drone and UAS operations sharing the National Airspace System.