There are many sites that show how to wrap a turban these are just a few:

How to wrap a Sikh turban

PDF with another method on how to wrap a Turban

A PDFor how to wrap a turban and make a turban cap for under the turban and some history on early turbans

Youtube video on How to: wrapping your Moroccan shesh (Touareg turban)

from the Ottoman Traders Guild a couple different ways to wrap a turban