This video will show you how to set up your paper following correct APA format guidelines in Microsoft Word 2010 for PC. This specific video focuses on making a title page, setting up a running head, and how to use section headings properly. (The steps should be very similar on Word 2007 and 2013 for PC. On Word for Mac, I believe the steps are the same, but the interface is different, so you may have to familiarize yourself with where all the options are on a Mac).
Note: If the ruler is not visible for you, go to the View tab and check the Ruler box.
For more information about APA style, pick up the latest version of the Publication Manual of the American Psychological Association, or browse through the resources at the Purdue Online Writing Lab (OWL): owl.english.purdue.edu/owl/section/2/10/