I do a lot of reading, both of books and business/marketing newsletters. I dont get rid of the books I read, unless they stink.
One of the things I noticed a while back is that the books I refer back to the most years after Ive read them are the ones that have the most pages “dogeared”. For those who are not as cruel to books as I am, “dogears” means folding over the corner of the page. Often, my reading places are in spots or at times where I cant take notes, so I dogear the pages that I want to refer back to.
The more dogears there are, the better the book, generally speaking.