• Auto Play (each tap on the screen turns the page and reads the next page)
  • One switch scanning (one switch hit turns to the next page and reads the next page)
  • Two switch scanning (one switch hit turns the page and the other switch reads the current page)

For more information, please see this tutorial (PDF). For a guide to Switch Control in iOS 11, please see AbleNet's comprehensive resource, iOS 11 Accessibility Switch Control - The Missing User Guide.