Need owners manual

[Frostbite-]

 I opened my first book, read it, and now cannot escape the book.  There is nothing to click on to get me out and back to my nook for pc library page.  I closed nook and reopened it and it is still stuck on the last page of my book with no visible button to click on or any pathway out.  This makes me feel idiotic.  Can't find the simplest instructions on how to use this monster.  Where can I look?

[Frostbite-]

Never mind.  I figured it out myself.  Now I feel brilliant.  A very simple owner's manual that comes with this product, saying where the basic keys are and what they're for would have been handy, though.