Good introductory tutorial series
http://papervision2.com/tutorial-list/
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Professional Papervision
companion site for new book about to be released with heaps of free video tutorials and source files
http://professionalpapervision.wordpress.com/
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http://www.brighthub.com/internet/web-development/articles/12902.aspx
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http://www.insideria.com/john-lindquist/
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Import a 3D model of a car and drive it around with the keyboard