To view the photo slideshow contained in an album, simply click on the album within the gallery you wish to view. The album will then expand and the slideshow will begin automatically.
Once inside an album, navigational elements allow you to maneuver through the slideshow for an enhanced experience. Hover over a thumbnail to view an upcoming image or click on it to jump to it immediately.
Any time you wish to come back to the album gallery, click on the gallery icon and you will return to your starting point.