Locate the .ABR files (Photoshop Brushes)
You can either find these by their file extension, or by their icon. Depending on what version of Photoshop you have installed, they will look like one of the files below.
Install the brushes
You can either drag the .ABR file(s) directly into Photoshop, alternatively, you can go to Edit > Presets > Preset Manager, select Brushes from the dropdown menu, and then add your brushes using the “Load” button.