That, and I also get value out of tracking books I might want to read. Whenever a book references another book I may want to read later, or there is a HN comme

That, and I also get value out of tracking books I might want to read. Whenever a book references another book I may want to read later, or there is a HN comment recommending a book which sounds interesting, I'll add it to my "to-read" list. Then when I finish my current book, I can sort this list by average rating to decide where to go next.