Below is a list of files provided by the ZBrush Masterclass : How to Sculpt a Dragon product.
Core
ZBrush Masterclass : How to Sculpt a Dragon (1of4)
ZBrush Masterclass : How to Sculpt a Dragon (2of4)
ZBrush Masterclass : How to Sculpt a Dragon (3of4)
ZBrush Masterclass : How to Sculpt a Dragon (4of4)