In the final part of Devin Rolsen's tutorial, he covers how to texture a complete 3D building with a multi-level interior and roof access in 3ds Max. Devin takes us through the process step-by-step, leading to the completion of a building he's designed for use in the Unity 3D game engine.

You can view this 3D building in game here: http://tinyurl.com/6qp7klv

And here are some useful shortcuts to save you time in 3ds Max:

Alt + Middle mouse button click/mouse move = Rotate perspective
P = Perspective view
Z = Auto pan and zoom to a selection
Alt + X = Turn Transparent mode on or off
F4 = Turn Wire Outline on or off

Video