This really depends on the model you are flying. Mini-drones can be flown in a small yard, or even inside the house. Bigger models need large open spaces, like a field. Just check the specifications for your particular drone. As a rule, make sure to fly it where you can always see where it is.
UAV stands for Unmanned Aerial Vehicle. A Drone can be any unmanned vehicle, be it in the air, on land, or even under water. Nowadays, it is a more generic term, and usually is synonymous with UAV, and the terms are used interchangeably. A Quadcopter is a helicopter with four rotors (no tail rotor). There are no manned quadcopters, only unmanned, so they are also drones. On this site we call most of the UAVs “drones” because it’s just simple for us to say, and hopefully simple for you to understand.
FPV stands for First Person View. This means that you’re flying a remote control UAV equipped with a video camera, and you see what it records using wireless video downlinks. This is when you have the feeling that you’re actually flying yourself, or you have that bird’s-eye view that is so awesome!
Best law to follow, and obvious common sense, is to stay safe while having fun. That’s exactly what the FAA (Federal Aviation Administration) says too. Recreational drone flying does not require FAA approval, but it’s good to take a look at their regulations in any case before you take a strong quadcopter out for a high flight. Here’s the link: https://www.faa.gov/uas/.
Drones come in many different shapes and forms. There are drones which are targeted for the younger age group, like 10-14 year olds; and others that require plenty of experience and technical knowhow. There are drones for beginners, and drones for more advanced pilots. It’s usually best to start with a quadcopter/drone that is relatively less expensive, practice flying and get good at it, then move on to a more advanced and more costly model. In any case, it’s fun to fly a drone, and practice with the more advanced drone models will soon make you just as much of an expert as the next guy or gal.