Can I download one ebook to multiple devices during the checkout period (i.e. a computer, a Nook, an iPad, and iPhone)?

Yes! You can download an EPUB eBook to any device authorized with your Adobe ID. Because you can only register six devices to an Adobe ID, you can only download to six different devices. Your computer counts as one device. Download eBooks during the checkout period by going to OverDrive > My Account > Currently checked out > Download

You can also download Kindle books to all Kindle devices and Kindle apps registered with your Amazon ID. After you deliver your Kindle eBook to your first device, all devices registered with your Amazon Account will automatically receive your title after syncing.

NOTE: Library books are delivered to Archive in the Kindle app. You must click on the title to finish downloading.