Pro Arma 3 tips:
>Play on a PC designed by Thor of the ancients to achieve godly 25 FPS
>Be fearfull of the environment more than players (Stairs, doors, slight slopes, rocks e.c.t.)
>Vehicles are allergic to bushes and pebbles, avoid at all costs.
>Staring at the sky will increase your FPS, hostiles will be bewildered at your godly FPS and lay down their weapons
>Question yourself multiple times when hovering over the Eject button in a Helicoptor/Plane "Do i have a parachute?"
>Don't be a hoarder, you are weak and suffer from asthma. Put down the spare rocket ammo.
>You are not a pro-pilot
>YOU ARE NOT A PRO-PILOT

But seriously, the game is amazing, but it's the community that makes it re-playable. Check out the steam workshop
Just don't play on a toaster. Or call yourself a pro-pilot. Or play alone. It's a sandbox, go make your castle and let it kill you.