Unless you go the customized route for decals, you can purchase N scale decals to help decal your rolling stock, bridges, buildings, or locomotives. I usually find my N scale decals at train shows. There is always someone clearing out their N scale decals of what they have left or will never use.

RSLaserkits Cheltenham Station Build by Modelersguild.com

If someone had told me two months ago, that there is such a thing as a Z scale Craftsman kit, [ ... ]

Here's a pic of the six, so far...

Hopper Weathering Clinic
By Bill Mock
December 2009

Here is the first stages of weathering of my new BN [ ... ]