Environment Prop Texturing: Step 2

Review: Importing Objects into Unity from Maya
This tutorial covers how to properly import assets into Unity from Maya, as well as how to create a Unity Prefab to scale imported files from Maya and create a sized ready asset

3D Texture Specularity: what is it & how to make a good spec map

This Tutorial covers how to create a specular map from your layered photoshop color file and import that spec into Unity on your texture file.

3D Texture Normal Map: What is a normal map and how to make a normal map

This tutorial covers what a normal map is and how to create one in Photoshop using Normal Mappr on a Mac. It also explains how to plug in a normal map in Unity 3D.

PC Normal Mapping Program (Nividia):
http://developer.nvidia.com/nvidia-texture-tools-adobe-photoshop

MAC Normal Mapping Program (Normal Mappr):
http://arstechnica.com/civis/viewtopic.php?f=19&t=200724&start=40