Trigger control is the ability to smoothly pull the trigger of a firearm so that the gun fires when you want it to.
To practice trigger control, find a safe place to shoot and begin by dry firing your gun.
This means you should cock your gun (if it’s a revolver) or charge it (if it’s semi-automatic) and pull the trigger without any ammo in the chamber.
If you’re having difficulty with keeping the sights aligned while you pull the trigger, try taking smaller steps instead of larger ones. And always remember to keep your finger off of the trigger until you’re ready to fire.