The Finder generally sits at the bottom of the screen. However, it doesn’t have to remain there. The Dock can be configured to display on the left or right sides of the screen. It can also be animated to provide feedback when something happens.
This can happen easily by using the System Preferences application. The following video demonstrates how to make the Dock behave the way you want it to.
Note, this post is updated, watch the new version of it here.