Blender is an open-source 3D imaging editor. In the past, the Classics and Psychology Departments have utilized this program to create interactive 3D environments for students or projects. The tutors maintain a set of Wiki instructions, found below.
Blender Basic Information and Short-cut Keys:
The above link covers all basic modeling, skinning, lighting, animating, and rendering techniques. For anything beyond the basics, the tutors recommend using outside sources, specifically BlenderArtists, which provides a great deal of support in the form of tutorials and forums.