Learn how to create a photo slideshow in Microsoft PowerPoint in this tutorial video. See step-by-step how to import photos, how to make quick edits to the photos, and how to bring them into a slide presentation. See how to set a time for the photos to stay on the screen. See how to add transitions between the slides. Lastly, see how to package up the slideshow so it plays automatically, either as an mp4 or as a PowerPoint show (ppsx).

As full disclosure, I work at Microsoft as a full-time employee.