The shutter speed of your camera refers to how long light is allowed to enter in through the lens. A simple idea but a crucial element when taking a photo.
On any camera that allows you to change this setting you will see numbers ranging from 5000 to 30′. Much like Aperture these numbers are supposed to be read as a fraction. So if you choose 5000 you’re actually choosing to leave the shutter open for 1/5000th of a second. If you choose a number with a quote after it, this means it is not to be read as a fraction but an amount of seconds, so 30″ would mean you are leaving the shutter open for 30 seconds.
So what does all this mean?