One of my favorite boards to stop by is Books Worth Reading. Here I have collected various resources in my ever present quest for more books (my husband and I currently have four 5-shelf bookcases - all full, two 3-shelf bookcases - all full, and several boxes of books without a home!).
On the board you will find links to book lists created for many reasons. One based on all of the books Rory Gilmore from The Gilmore Girls ever mentioned on the show. There is one for books young girls should be introduced to before a certain age. If you have a favorite series, there is a good chance I have collected a pin for links to other series you might enjoy based on your interest in that one.
No matter what you are looking for, individual books, book lists, quotations about books, I probably have something on the pin board for you.
Check it out!