The Never-Ending Story, by Michael Ende. A YA book much better than Harry Potter. You want the hardcover edition, where part of the text is printed in red green. Flip through the pages to make sure. The MC only steals one book, but that sets the plot in motion.

Shadow of the Wind is about a kid gifted a copy of a book, told it's his responsibility, then finds there's someone running around Europe, collecting everything by that author, and burning them.

Do Morrowind playthroughs count?