Create a new document, Make it the size you want to suit for text size. don't go over a 100px

Set your foreground color to gray, And type your text, Use whatever style of text you want. (Size of background- 800 by 600 )(font used-Boulder) what I used

Once your text is competed, Ctrl- and left click View

that should make a selection of the text, now duplicated the text...( how to duplicate) We now need to rasterize the duplicated later.. (how to Rasterize) Do not deselect until I let you ok--- :)

On the rasterize layer, we will add some filter....Go to filter-blur- Gaussian blur. set the blur to 4pixel and click ok. Next filter--Go to filter-render-lighting effect-View Settings

Go to Image-Adjustment-Curve- View my curve- try and set it to look as 3d as possible.

Try and select the white color . Using the eyedropper. It shoud look like this if you did it right

Go to select- color range- View