This post explains you the basic way to move straight forward. It is one of the first movements that you should learn when you start to become a successful goalie. This move keeps your upper body focused on a potential shot, as the whole movement will be done with the legs. I (Lars) like to compare it with a swimming duck. Above the water surface, the duck swims easy and peaceful but when you take a look under water, you see that it does a lot of movement with its legs.