Click on the button for the album you wish to view.  The first photo will then appear.

About mid-way up on the right side of the photo, you'll see the outline of a right-pointing arrow.  As you move your mouse over the arrow, it will become brighter.  Just click on the arrow to go to the next photo.

There's also a left-pointing arrow, mid-way up on the left side of the photo.  Click on it to go back to the previous photo.