This document provides an introduction to drones and unmanned aerial vehicles (UAVs). It discusses the history of drones dating back to 1924, differences between remote controlled toys and UAVs, components of drones like frames, motors, electronic speed controllers and batteries. Applications of drones mentioned include emergency medical assistance, photography, search and rescue, agriculture, and more. The document also contrasts helicopters with quadcopters and lists common tools used for drone building/repair.