Free Friday books are only available for free on their designated Fridays. However, they are still available to purchase and download anytime through their links located on the Nook blog.
Since 2009, Barnes and Noble hosts a blog devoted to its popular eReader, the Nook. One of the blogs most popular section is its Friday book giveaways. Since 2010, almost every Friday, Barnes and Noble lists at least one free ebook on its Nook blog.
The free Friday book posts provide a brief synopsis of the free book, links to it and a photo. This section of Barnes and Noble's Nook blog also offers free Nook apps every Friday.