“In our latest collection of ZBrush Tutorial Videos by Pixologic we will show you all about ZSpheres and how to use them. Later on in we will put what you have shown you into use by creating a simple human, hand and quadruped models.”
http://www.3dtotal.com/team/Tutorials_3/ZBrush_Tutorials/ZBrush_ZSpheres/ZSpheres_01.phpZsphere Basics
This is not on MrBluesummers.com