You can use Shelves to keep track of what you (and your friends or colleagues) are reading. Titles can be set as Anticipating, Highly Anticipating, Currently Reading, Finished Reading, or even Didn’t Finish.
You can add a title to a Shelf wherever you see it on the site, whether in a widget on your homepage or in a catalog or a filtered title list.
On the homepage, click on a cover image to pull up a title detail page. You can add to a shelf there.
Once you have selected one of these options it will appear on your Shelves page:
The Add to Shelf icon will show here while viewing a title list or catalog: