With iBooks 1.1 and iTunes 9.2 or later, you can now sync your iTunes Digital Booklets to an iPhone, iPad, or iPod touch. To sync your iTunes Digital Booklets to iBooks, you will need to change the media kind of your booklet. Follow the steps below to change your booklet's media kind.
Notes:
Changing the media kind of your iTunes Digital Booklet
Note: Once you change the media kind, your Digital Booklet(s) will no longer be visible in your Music library, but instead will be moved to your Books library, located on the left side of the iTunes window..
Syncing an iTunes Digital Booklet to iPhone, iPad, or iPod touch
Once you've changed the media kind you can sync your iTunes Digital Booklet just like any other book.
Note: Your iTunes Digital Booklet will be displayed on the PDF shelf in iBooks.
For iTunes 9.2 system requirements, please click here.
For information about iBooks, please see the iBooks Frequently Asked Questions.