Take your time and go through all the Ins and outs. Watch the videos... go through all the steps and know the AC before takeoff. Download DJI assistant, this will help with other calibrations, as well recal the visions sensors, or updates! You can do updates Via Wi-Fi as well. Each battery you have and the AC plus controller will prob need updates. Up to you if you wish to do them. Personally I don’t update the fly safe data anymore... cause DJI in China has no clue about no fly in USA. So, I use other apps to aid in my safe areas of flights.
So, I would take a battery that’s charged... calibrate that IMU, and the rest... See what you can do in settings before takeoff. Then enjoy your flights. Be safe! No buzzing the tower, or fly bys! Lolol.