This book is the translation of the French 3rd edition of «Drones, Le guide des bonnes pratiques pour choisir, équiper et opérer» Even for a professional, it's not easy to choose from dozens of types of UAV that can perform various tasks. In order to choose for your particular needs, there are many questions that have to be addressed. For example: • What are the different types of drones and their uses? • Is it better to build your drone yourself or buy a ready to fly model? • What are the elements of the drone that will enable you to make the right choice? • Which batteries to choose? • Which remote control to choose? A drone has to be seen as an aircraft carrying a payload. The need to align the task with the aircraft raises questions such as: • How to design its payload? • If you are making it yourself, which 3D printer to use? • What are the impacts of the payload on the choice of the drone and the flight route? • How to choose components and the technology of the payload? Finally, operation also has its constraints: • What precautions should be taken to operate in the field? • How should you organize your tasks? • How to set up the radio link to avoid a communication break? • Which launch and recovery systems to use? This book will help you answer these questions and ensure you get the most from your UAV.