Rate and review books
You can rate a book, review it, or tell others about it in the iBooks Store.
Click iBooks Store in the toolbar (or choose Store > Store Home).
Select a book, then do any of the following:
Rate the book: Click Ratings and Reviews, then click one to five stars.
Review the book: Click Ratings and Reviews, then click Write a Review.
Tell others about the book: Click the arrow next to Buy Book, Get, or Pre-Order, then choose an option.