Assembling a drone is easy to do, as is configuring it. In fact, everything I'm talking about is available all over the internet, from videos to PDFs. You can buy a frame or have it 3D printed, and you can find the rest of the electronic parts and camera in China for less. There are several models of controller boards, from simple to more expensive.

Assembling a drone is an interesting activity, already used in schools in the US to teach electronics, automation, and physics. There are cheap, small, and recreational drones, as well as large drones used by the film industry for aerial filming. Today, drones are known for being used in shows, and can be automated to create images in communities (sets). But they have also become famous in military use, carrying artillery in fields against trenches and armored vehicles.

Using drones is revolutionary and can create jobs for you. Today, drones are used for topographic mapping in agriculture or construction. They generate images in real time with statistical software for better use of space and detection, even for pest control.

If you want to start learning how to control a drone, download the game/simulator Lift Off (you don't even need to buy it on Steam, download a pirated version, it's lightweight).

Just start.