Line of Sight is a reference written for the private flyer who wants to understand the machine in their hands before asking the next question. The first section, What is a drone, walks through the aircraft you will actually buy: camera drones, FPV and racing builds, mini and foldable machines, and the choices a first purchase forces you to make. Each entry starts from what the hardware does and works toward the decision it supports, so the reader leaves knowing why a part exists and what happens when it fails.

The next section, UK drone rules, sets out the regulations the Civil Aviation Authority applies to a hobby multirotor: the licence question, insurance, where you may fly, registration and the under 250 grams class. Learning to fly follows, describing the controller, the simulators and the apps that stand between a new pilot and a first stable hover. Drone photography covers the craft of still work and video from a moving platform, the gimbals that keep the picture steady and the techniques that make the footage hold.

Two sections then turn to the machine itself. Drone batteries explains the LiPo chemistry, the charging routine and the safety and storage habits that keep a pack from becoming a fire. Drone parts walks through the eight assemblies a multirotor is built from, from frame and motors to propellers, FPV goggles and landing pads, and the repairs that keep a battered quad in the air. Finally, Radio controlled models reaches past the multirotor to the wider hobby: helicopters, the classic quadcopter layout, first RC planes and the drive and fly hybrids that blur the line between ground and air.