AutoDesk has a web group that you can join if you have an .edu email account and they allow you to DL full versions of their software for free, the only catch is that when you print there is an AutoDesk water mark around the perimeter. Most of this software is good for one year or until they get the next version released. 3ds Max is only a 30 trial however. They also have tutorials and more.
http://students2.autodesk.com/?nd=login&logout=1