The left side of the interface is the hard drive folder viewer and file viewer.

The top panel is the folder viewer to navigate through your hard drive to locate your photo folder. This option saves you a lot of time to "Get Photos" before you edit your page. Most of the other book design software requires you to import your favorite photos into the program before you can even start editing your photo pages.

The bottom panel is the preview/thumbnail view for each photo in this photo folder. Scroll through the folder to drag and drop your desired photo into the work space.