The purpose of this half-day, introductory training is to provide HIV clinicians (including, but not limited to physicians, dentists, nurses, and other allied medical staff, therapists and social workers, and counselors, specialists, and case managers) with an overview of medical marijuana, its use among individuals living with HIV, and strategies on how to work with HIV patients who are using medical marijuana. The training product includes a 120-slide PowerPoint presentation, Trainer Guide, 2-page fact sheet, and reference list. The duration of the training is approximately 3 to 3.5 hours, depending on whether the trainer chooses to present all of the slides, or a selection of slides.