I downloaded an app on my Android phone a few weeks ago called MyBooks. You also need to download a barcode scanner app. You just scan the barcodes on the book and it creates a list of your books. If you click on the name of a book on your list, it will bring up information about the book as well as the ISBN number. I've not actually sorted out all of my books yet, but if they are all quilting books it's probably easiest to sort alphabetically by author. On the app you can look for the book you want and it also lists the author so you should easily find it on the shelf.