Hi marciafromspringfield,
I see that you have a question about rearranging your books in the iBooks app. Here is an article for you that will help you accomplish this goal:
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Organize your books with collections. Tap Select, then select some books to move them into a collection. To edit or create collections, tap the name of the current collection (at the top of the screen). Some built-in collections, such as PDFs, can’t be renamed or deleted.
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Rearrange books. While viewing books by cover, touch and hold a cover then drag it to a new location. While viewing books by title, sort the list using the buttons at the top of the screen. The All Books collection is automatically arranged for you; switch to another collection if you want to manually arrange your books.
Organize books - iPad User Guide
http://help.apple.com/ipad/8/#/iPad5ecae3c6
Thanks for coming to the Apple Support Communities!