in this tutorial, you'll learn how to give your text a 3-d effect by adding a shadow:

create a new image. any size is fine, just make sure it fits the size of the text you have in mind. next, select the text tool and choose the size, color, and family of your text. anything will do, as long as you create it as 'floating'

once you've done that, go to effects - 3d effects - drop shadow.

match your settings to mine:

your finished product should look something like mine: