The mouse
The mouse is the thing that you move the little arrow, called the cursor. If you are reading this, you probably already know how to use it anyways. But let's go over the basics. The button on the left part of the mouse is called the left mouse button and on the right, the right mouse button. If your mouse has a wheel on the front, pushing it may give you a middle click. On macs, Apple's mice have only 1 button built into the shell which is equivilent to a left click. Pressing the ⌘ key with the button may produce a right click. Here are some examples of computer mice: