Click on the first image you see, your front and back cover, and once it enlarges then click the arrows or swipe to advance to the following pages in your book.  Note that after the front and back cover image your will see page one which is just one page/side.  After that you will be viewing spreads, two pages at one time, until the last image which is just one page just like the first page :)  Enjoy!  It looks awesome we hope you like it.  You picked great images.