sorry if this is a noob question but when i clicked on the file, it opened photoshop but the brushes aren't there. how do i install them?
It's not a dumb question! Photoshop makes it kind of hard to find these options if you don't know what you're looking for.
When you open the Brush panel, there's a little arrow in the upper-right corner; click that and then select "Load Brushes." Then you'll be able to find the ABR file in your downloads folder or wherever you've saved it, and open them up!
Alternatively, you can get to the same drop-down menu directly from the Brush Presets window if you keep it open all the time like I do:
These options are very handy for saving and reloading brushes, so you can have only the ones you need open, and don't have to scroll through a hundred sparkle brushes to find the one you need!