Several of the tutorials in 3D Photoshop include third-party models, cutouts, backgrounds and textures. The tutorials with downloadable assets are all clearly marked in the book; here’s where you can download an archive containing the files. You’ll need to unZip the downloaded archive if your browser doesn’t do this for you automatically.
Some models have been generously lent by the Digimation 3D Archive. You can find out more about this outstanding collection of 3D objects on their website. Please note that since publication of the book, these models are now available for Windows platforms only.