If you need to print an excerpt of a book in your iBooks library, you can do so right from your iPad. Simply start “reading” the book you want to print, and activate the overlay. Tap the arrow-in-a-box button, and select “Print”. Finally, select the range of the pages you want to print, the number of copies, and the AirPrint printer you want to print it from, and press Print.
Have fun with your iPad!