I know I sort mine by author name, as I read a number of books at a time. (Don’t ask exactly how many…it is appalling!) I’m just not sure if you could sort by your own ratings. Incidentally, I have signed up for several websites that will send you a daily email with free, or nearly free e-books that you can download. They are Book Bub, Early Bird Books, and Reader’s Desk, so check them out if you want to. I try not to spend too much money on Kindle books either.