Moving a 3d object (beginner's question)

Check this video, and after it your question about 3D obejcts, 3D camera how to control it, can resolve

https://www.youtube.com/watch?v=zgMHWFolli8

You pre-compose it and move it as a 2D layer. AE's 3D camera only can do speherical projections, so the perspective will alway change in 3D space as you move stuff around. You can only minimize it to a point where it's barely noticable by using cameras with an extreme focal length or similar tricks. Otherwise you may simply need to warp your objects in 2D using effects löike Corner Pin, Mesh Warp and so on to create the illusion of 3D similar to how the perspective grid in Illustrator works for instance.

Mylenium