well when you download the brushes, save them to your desktop, then go into photoshop and select the paintbrush tool, then click the little down arrow that lets you select different sizes of brushes, and there is a little arrow pointing right that is directly next to the size of the brush, 27 px, or whatever yours happens to be at the given time, click on that arrow, and scroll down to load brushes, than it will bring up a little menu thing and click on the brush thing thats on your desktop and hit "load", i know that was confusing, but try to follow it best you can.
