There are four common shooting positions for rifle,
shotgun and handgun shooters: standing, kneeling, sitting, and prone.
Many shooters will sight in their firearms by using the bench shooting position. This is also a great shooting position to learn rifle and pistol shooters skills. Trigger control, sight alignment and sight picture should be mastered in the bench position before you proceed to the four common shooting positions.
Have a look at the various rifle shooting positions.
Your firearms instructor will help you learn these position. Positions
may change due to the type of firearm you are using and the shooting
discipline or competition you are involved with.