Lifting off is very simple, all you will need to do is press R and the rotors / engines should start working

Choppers :
Hold W to go up and S to go down, use your mouse to balance the chopper so you dont crash.

Planes :
Hold W and start looking up

That was part 1, very simple, but its going to get a bit more difficult

Youll now learn on how to actually stay in the air instead of crashing, its simple for planes, but harder for choppers

Choppers :
Balance out the choppers weight with your mouse, and use A and D for looking left and right.
Try to look down slightly to regulate the speed and weight.
(If you look down too much, you might flip or go too fast)

Planes :
Use your mouse and A and D to control where youre flying to
(If you spin your mouse too fast youll spin around your own axis, lose your speed and crash)

Now time for you to land, this one is not easy for jets, but simple for choppers

Choppers :
Simply hover over your desired landing spot and hold s
(Try to regulate or youll crash into the ground and explode)

Planes :
Fly to your desired landing spot and hold s to slow down and pray to god you dont ram into walls with the leftover speed.
(You can also bail at any time its simpler and safer as long as you have a parachute)

Now lets do some more tricks with flying, tipps are included as well

Choppers :

Try to not look down too much and mainly use your mouse to balance out the weight for easy control, make sure to not be too close to buildings or ground.
Use them with care to not crash after you took of, hold A and D with a combination of mouse turns to steer left and right fastly.

Planes :

Flying sideways makes you steer left and right faster, you can also go up sharply.
Fly gently and dont try to make many movements, be aware of the map since these things easily get destroyed.

Time to kill some noobs because you can't and thats also why i made this part

Planes :

Air to Air :
Most fighter jets (f16) have miniguns equipped and designed for dogfights, turn sharply to get the advantage over the enemy plane (remember if you turn too sharp youll flip around your own axis), then destroy it from behind.

Air to Ground :
Most attack jets (a10) have explosive cannons made for air to ground just so you can nail noobs that cant fly, on ground.
Your best bet is to kind of strike them (like an a10) and slow down for more time to shoot the cannons at the players on ground.
Attack jets are very good in taking out enemy tanks, what to do here is to strike from above since thats their dead zone where they cant shoot.

Bombs :
Bombs are weird and are only on gredwitch, just fly in a straight line and drop the / carpet-drop the bombs on the players on ground

Choppers :

Air to Air :
Choppers suck at air to air since they have many deadzones that jets are going to abuse.

Air to Ground :
Choppers are all made for air to ground with their mostly explosive miniguns and op rockets, what you want to do is pretend to be an ac130 gunship and orbit around a certain place or pretend to be an a10 and stike a location with rockets