Telescopic sights are very popular with hunters. They are generally easier to use than open or peep sights. The scope is a tube which the shooter looks through toward the target. The pictures below show different telescopic sights. Telescopic sights normally make the target look closer or bigger, making it easier to aim.
With a telescopic sight with a crosshair reticle, you line up the target with the crosshairs of the sight.
With a telescopic sight with a dot reticle, you line up the target with the dot of the sight. The dot must be centered.