This tutorial provides an introduction and “how-to” overview of the action research methodology within the context of information technology and qualitative information systems research. The introductory material will deal with conflicting definitions of action research and the appropriate application of this technique in particular information technology settings. The how-to overview will focus on the participatory and clinical forms of action research. The practical overview will conclude with a discussion of criteria for evaluating the effectiveness of action research and the relationship between action research and consulting.