To install the brushes

1. Download the file from your orders page
2. Open Blender and go to File > Append > Navigate to download location > Select the RockForge.blend file > Click Append > Select the Brush folder > Select all the brushes Starting with "RF" using shift+click > With all the brushes selected click Append
3. When in Sculpt mode, with the Draw tool selected, you should be able to choose between all the different brushes by clicking the small icon just below the "Sculpt Mode"

The sandstone texture is also appendable in the same way, it is found in the materials folder.

If you need any help at all please don't hesitate to contact me.

Bellow is a view of all the brushes as you would see in the Blender brush selection panel.