content: It is pretty simple. For a simple wing airplane: 1 piece of foam from home depot. 1 motor. 1 speed controller. Two servos. You can call it quits here and attach your receiver and transmitter, but then its just an RC craft, if you want to call it a drone you need to buy a control board and a gps. Then simply plug everything in and upload the code that you downloaded, click points on a map and your drone goes there.  Multirotors the only difference is you need to make(can be done with a 25 cent washer)  or buy a power distro cause you need three more motors. My racing 250 quad costed around 190 bucks and I had it built before work the day after I got the package from China containing all the pieces. It is not as easy as setting up jenga but it is not rocket science. 100's of youtube videos can guide you at every step too.