well thumbed 
adjective
(Of a book, magazine, etc.) having been read often and bearing marks of frequent handling: a treasured, well-thumbed copy of Pepys...
- It's dotted with low glass tables, Eastern religious icons and some well-thumbed books on astrology.
- Leaving his boyhood club was like closing the last page on a well-thumbed book.
- Dozens of adoring young fans held out their well-thumbed copybooks for autographs, others wanted a little bit more and pleaded for a photograph or, God forbid, even a hug or a peck on the cheek.