Rhino 4 Tutorial Models?

Hi there - we’re preparing to use Rhino at our school, but we’re using version 4. The website only seems to have access to the v5 tutorial files. Can anyone advise us how to access the v4 tutorial files?

User’s Guide and models:
http://www.rhino3d.com/download/Rhino/4.0/Rhino4Guide

Level I and 2 training guides:
http://www.rhino3d.com/download/Rhino/4.0/Rhino4Training