Q: My iBook won't finish downloading or open

Hello Mamafail,

Welcome to the Apple Support Communities!

I understand that you purchased a book in iBooks that will not finish downloading so you can open and read it. To troubleshoot this situation, I would recommend first trying to re-download that book from your purchases. This process is explained in the attached article below. 

Download past purchases from iTunes in the Cloud - Apple Support

If you are still having issues downloading this book, you can report the problem directly to Apple using the information in the next attached link. 

Report a problem with an item purchased from the iTunes Store, App Store, Mac App Store, or iBooks Store - Apple Support

Have a great day