Some drones require you to assemble them yourself. Drones marked RTF (ready to fly) are fully assembled, while those marked BNF or ARF may require assembly.
It's also important to check the drone's battery life. Basic models can only offer a flying time of 10 minutes, while others can last up to half an hour. If you're a beginner, look for a drone with at least 15 minutes of flying time, as shorter flights can be frustrating when you're trying to practice.
In addition, check the drone's connection range, which is the distance it can be from you and still respond to your commands. Depending on the model, this range can be up to 6 miles (10 km).
Read more about where and how you can fly your drone.