The beauty of reading e-books on an iPhone, iPad, Kindle or Kobo is that you never need to go to the bookstore. You can download new books from your couch, from your bed, and even on the subway. It’s amazing, really. The downside to this, though, is that you can download new books from your couch, from your bed, and even on the subway.

This, obviously, can become an expensive habit.

Luckily, we recently stumbled upon something that may change your entire e-reading experience. It’s called OverDrive, and it allows you to take e-books out of the library.

Technically, OverDrive is a distributor of over 650,000 digital titles—e-books, audiobooks and other digital content. It’s relatively simple to use. You can search for your local library straight from the site or from the OverDrive app. Simply plug in your library card number and search away! Once you’ve selected your title of choice and clicked “check out,” you’ll receive an email letting you know when your book is available for download. Most titles are available for 21 days and then they will simply disappear from your account. You will never have to worry about forgetting to return library books or paying late fees.

Occasionally, you will have to wait for newer books and your local library may not have the titles you’re looking for in e-book format. But that seems like a small price to pay to be able to read for free without ever having to find the time for a trip to the library.

Do you read digital books? Have you ever taken them out of the library? If you’re looking for some great reads, check out the 21 books we want to read right now.