Parker Davidson gets you up and running with using UV Sets and the Layered Texture Node posting a quick-start basic tutorial showing how to use the two to create details, providing a good foundation for the basic technique.
A quick rundown on using the Layered Texture Node, and UV Sets to texture quickly and efficiently in Maya 2013
Using Mental Ray for rendering, Parker shows how to link UV sets that can be used for displaying various textures all at once, making it easy to build complex details by segmenting the textures to various components.
