3D Resources
Adobe Recommended Resources:
http://www.photoshop.com/products/photoshop/3d/content
Adobe Stock:
https://stock.adobe.com/
Turbo Squid:
https://www.turbosquid.com/photoshop-3d
NASA 3D Resources:
https://nasa3d.arc.nasa.gov
Class Files
Beginner’s Guide To Working With 3D Objects in Photoshop
Create 3D Objects From Scratch Using Photoshop
My 3D Tutorials
http://jr9982.wpengine.com/3d-photoshop-tutorials/