Full screen viewing - click on the tour you want to view. Click on the three dots in the upper right of the photo. In the drop-down menu, select Full Screen to maximize the picture on your device. To return, click the three dots once more and select Full Screen again.
Navigation - after starting the tour, either click on the link bubbles that appear with in the photo, or select another room using the navigation strip at the bottom of the photo.
Information - each photo has "i" icons appearing throughout. Click on these to get more information about library services and collections.