Read all of this:
https://ardupilot.org/copter/docs/initial-setup.html
And all of this:
https://ardupilot.org/copter/docs/flying-arducopter.html
Then all of this:
Then go through the last link again and configure your drone step by step.
Read all of this:
https://ardupilot.org/copter/docs/initial-setup.html
And all of this:
https://ardupilot.org/copter/docs/flying-arducopter.html
Then all of this:
Then go through the last link again and configure your drone step by step.