Open Alberta. Textbook. The APA Style Citation Tutorial is created by staff at the University of Alberta Library to support students and faculty. The tutorial covers why it is important to use citations, elements of common source types, and how to create reference and in-text citations based on the 7th edition APA guidelines. This tutorial can also be used a reference resource.
Academic Writer Tutorial: Basics of Seventh Edition APA Style
If you want a step-by-step introduction and practice opportunity, the tutorial linked below, from the American Psychological Association, is a good place to start.