If you download a lot of Photoshop brushes, or presets to extend any software for that matter, there is a very easy way to install them quickly on a Mac using OS X. This little OS X tip could shave off at least 1 or 2 clicks from your installation process.
If you're like me, you might need to install a Photoshop brush or an Illustrator preset that you downloaded on a somewhat regular basis. Well, installing those presets can be redundant and annoying, so lets make it a little less of both.
After you have that perfect brush set or preset/extention/whatever downloaded, hold the Command (Apple) key and click on the Photoshop icon (or Illustrator, etc.) from the dock. You will be instantly taken to the applications folder in Finder with your app selected. No need to scroll at all.
Once you are there, all you have to do is select the “Presets” folder, drag your download to the correct location, and your done.