You can add your local library system to your list of places to find books. I added the Montgomery County libraries. Now I can look at my GoodReads list, pick a book, see if it’s in the library catalog, and then place a request for it online.
To add your local library, edit the “Book Links” tab on your account settings (found under where it says “Hi [Name]”). On the right, there will be a link to “add a new link.” Follow the instructions on the lower right side of the page. The NYC public library system and the MIT libraries are already there.
To search for a book, click on the title or search for it using the search box. Then click on “compare prices.” On the right, there will be your list of Book Links. Click on your library system, and it will automatically search the catalog for you.