There is a good tutorial presented by the American Psychological Association, which anyone who is not already very comfortable with all aspects of APA style should watch.
For more experienced users of APA style, there is also an APA tutorial on what's new in the 6th edition (new as of July 2009).
The tutorials linked above are created by the American Psychological Association, and hosted on their website.
Visit the F. D. Bluford Library for a free copy of the EndNote software, a great program for managing your citations. We also have workshops on how to use EndNote, or you can make an appointment for help.
Below you will find some links for other online tools that will help you with formatting citations.