(NOTE: All Papervision tutorials, references, and examples have been aggregated to one page on the new site. Click here.)
Two further resources…and again, I know Papervision isn’t really part of the Metaverse but combined with other work from Macromedia, it will eventually converge (plus, I just think it’s really cool).
First tutorial is in Portugese and provides a nice intro with a follow-up more advanced discussion.
A tutorial “from the ground up” includes screen shots and does a great job of describing the integration to 3DS etc.