The Books tab allows you to choose how iBooks files, PDFs, and audiobooks are synced to your iPod touch.
- Sync Books - This box must be checked in order to sync books and related files from your computer. When it's checked, you'll be able to choose from the sections below.
- All/Selected Books - Check All books to sync every book you have. Check Selected books to control which ones are synced.
- Sorting Options - The drop-down menus in the Books box lets you sort books by file type (Books and PDF files, Only Books, Only PDF files) and by title or author.
Below the Books is the section for Audiobooks. The syncing options there work the same way as Books.