If you have seen any animated gif image from videos and you were wandering how to make your own gif from video scenes, here is a simple tutorial.
Go to gifyoutube and put the URL from you video you want to create a gif image. Provide the title and the timing (from starting to end) and click on "Create gif". When finish, your gif will be ready.
Note that their servers are the most time busy and you will have to wait most of the time. If you want something better, check GifGrabber.