Ben Mauro has released a free 3D environment design tutorial using ZBrush, Keyshot and Photoshop.
Fausto de Martini - Interview
CG Channel have interviewed Fausto de Martini, former 3D art director at Blizzard Entertainment.
Large Collection of Free ZBrush Brushes
Michael Dunnam has released a large collection of free brushes for ZBrush.