This tutorial shows you how to install Photoshop actions by downloading actions, placing files and loading actions. Here are more free basic tutorials.
1. Download Actions
Find the actions that you want on the web and download it. The Adobe Photoshop actions file will be in a ATN format.
2. Place File
On desktop, Finder > Applications > Adobe Photoshop CC 2015.5 > Presets > Actions > drag ATN file into the folder.
3. Load Actions
In Photoshop Menu Bar, Window > Actions > click menu icon.
Select your actions > click Open. Done!