Q. What do the buttons do on an Apple mouse?
There are several different buttons on an Apple mouse performing a variety of functions. It includes a left, right and side buttons. Additionally, it includes a 360 degree scroll ball which allows for movement around a page vertically, horizontally and diagonally. The newer, magic mouse does not have physical buttons but instead uses gestures for navigation.
A full description of the functions of Apple mouse buttons can be found in the Different Buttons on a Computer Mouse resource.