Once the book finishes loading below, if you click on it once it will zoom in on the page. Once zoomed in, you can click and hold to move the page around in the window!
If you press the "Next Page" or "Previous Page" buttons, the page will flip appropriately and display the next sample pages.
If you ever want to zoom out, you can simply click on the page a second time. From here you can even click and hold on the edges of the pages and turn them yourself!
