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What's your goal? Have a look at ArduPilot.

Sidenote: I wonder what the Hello World of drones is.

Goal is to mostly be able to learn how to program the quadcopter. Be able to fix the hardware or the quadcopter if anything goes wrong.

Then possibly something one day doing something like this:

Another vote for ardupilot here. Easy hardware because its an arduino, great community and simple to use.