Read AND completely understand the Manual.
Over use the simulator. If you have a question, fly it in the simulator to find the answer.
Set proper flight parameters and check them before each and every flight.
Understand/set up RC to your way of flying(map, FPV switching, antenna orientation, etc)
Fly with fully charged AND freshly charged /topped up batteries.
Conduct first flight in a WIDE OPEN FLAT, OBSTACLE FREE AREA to get up about 6-8 feet and get the feel for flight and controls.
Gradually learn to fly in Atti mode without dependence on GPS so that you can manually control bird with no automation.
Pay attention to wind speed and direction with regards to battery discharge/flight time.
Learn how to do a CSC and don't do it in flight. Also learn how to do a left stick/one hand CSC in order to hand catch.
Obey the regulations and respect other people and their property while you fly.
As you learn the above, begin the fine tuning of your photographic ability and all the camera settings both still and video.
Have a blast and be amazed like the rest of us.