This is a simple way to make 3d shapes in photoshop. I made some shapes as an example. You can do differently if you like. It only takes 4 simple step to do. There will be also pictures!
1-Open a new file, around 300 x 250pixels, with any background color.
2-Go To FILTER > RENDER > 3D TRANSFORM
3-Click on either the Cube, Sphere or Cylinder tool and make your shapes. Here is mine:
4-Click on the Trackball tool and rotate your shapes. Here are my results:
Hope you like it. try it out yourself. If you have any question reply here. I'll do my best to answer.
Um... righty. See, you didnt really do anything amazing or spectacular with this. Anyone who has Photoshop should know how to do it. Its in the freakin instruction manual somewhere