I have posted many books with no problem, I am trying to now and it tells me to rate the book by clicking a star , I click a star and it still won't post. Help!!!!!

If it's the 'star' used for 'rating' the book (which is what I'm reading into your post), it has nothing to do with posting a book.  If you enter the ISBN # in the Search at the top right of the page, it should pull the book up and then you just go to POST A BOOK, and it should take care of it. If you're posting from your Account page where it says POST BOOKS, again it should just bring up the book and you can post it that way.  HTH. Pat

Always post a Book by ISBN.  If you post just by finding the book you could post the book under the wrong ISBN and wrong binding.  The stars are only for rating how you liked the book.

If you try to add a book to your "Books I've Read" list, you'll get the message asking you to rate the books by clicking on the stars.