Brushes can be accessed directly in the enclosed .blend file, appended into your project from said file, or import the brush set through File/Import/Brush Set.

Icons and individual vector displacement maps are packed into the .blend file and can be accessed from the enclosed .zip files.

Brush size and intensity can be addressed in the usual sense or through the texture size drop-down for added control and usability. Strength can also be determined through use of the Texture tab's "Z" size. <1=Stronger (Deeper) Output.