Beyond this website and its contents, the following links are to other trusted sites on Chicago/Turabian .
What is the difference between Chicago and Turabian?
The primary difference is that Turabian is shorter and contains fewer instructions, and that it does not contain information about publication. The Chicago Manual of Style is designed for professionals in the field who are publishing, and has a great deal of instruction on formating and many other things. Turabian is a pared-down version designed for students writing research papers.
Which should I use?
You should always talk to your professor, but for the most part, all of the guidelines that you find in Turabian help pages will also apply to Chicago style.