Libby's "Deep Search > Notify me" feature to let your library know you're interested

If the book you'd like to read isn't in Libby when you search, click "deep search" and the book will show up. Click "notify me" and this 1. Sends a message to your library you would like this book to be added to their Libby collection and 2. If/when your library buys it, you get a notification its available! Obvi doesn't mean your library will buy it, but many I've requested come through.

Additional pro tip - do this with books that aren't released yet, then you're first in line for hot new books.