A fast shutter speed helps you to catch a photo of a moving objects this is a great way for to see how car are like when they lave a trail of light or when you can see how birds fly in the sky.
I’m going to explain about the basic of a fast shutter so you will know how to set it up for your own camera or if you are going to go in to photography.
A fast shutter speed will be down to the normal set speeds. and here is a basic set up for you.
1s 1/2s 1/4s 1/8s 1/15s 1/30s 1/60s 1/125s 1/250s 1/500s 1/1000s 1/2000s
as you can see this is the line of seep that the shutter camera you can set up for you in your camera.
Here we have a chart so you can what the best speed is for in any situation for you to know.

hopeful this chart can help you understand how to do a fast shutter speed were you are.
Also here are some more facts about more in detail.
Fast shutter speeds such as, 1/250s, will freeze faster moving subjects, depending upon their speed of movement.
Slower shutter speeds such as, 1/30s, and slower, will create motion blur with moving subjects, depending upon their speed of movement.
When hand holding a camera, depending upon your choice of lens, you should ideally select a shutter speed of at least, 1/60s, to prevent camera shake, without using a tripod.
also i do have some photos that you can see of fast shutter speed. you have already seen them but its a way for you to understand shutter speed.
all tho you have seen these photo i want to show how the fast shutter speed is like of some of the photos that i have done. So you can understand what it looks like.
And here are some photos that i have found on the internet so you can get more of a idea how to do a fast shutter speed photos.