Eat3D has just released a new training DVD that covers all the basics of Autodesk's powerful sculpting program, Mudbox.
In the DVD, the founder of Eat3D, Riki Babington, covers everything from the very basics of the UI and brushes, to more specific techniques such as using pose tools, curves, cameras and lights, viewport filters, map extraction, sculpting with maps, and rendering. The tutorial also includes a demonstration of creating a high quality sculpt of an old wall using techniques that have been covered. With a total of 4.5 hours of content, and Eat3D's reputation for great tutorials, this is a great resource for any game artist.
Check out the DVD here: http://eat3d.com/mudbox_intro