In addition to the above mentioned physical buttons, there also two further buttons, a «Next Page» and «Previous Page» button on right side of the screen. (ebookreaderguide.com)
Do you ever worry about being on the «right side of history»? (rachelheldevans.com)
There is a search box on the upper right side of the page, so if you're looking for a specific topic, all you need to do is type it here! (momwoot.com)