The OverDrive Media Console app is now available for NOOK HD, NOOK HD+, NOOK Tablet and NOOK Color which will enable wireless borrowing of library eBooks and MP3 audiobooks. NOOK 1st Edition and NOOK Simple Touch users can only get eBooks to their device by transferring them through the Adobe Digital Editions software on their computer.
You can find the OverDrive Media Console app in the NOOK apps storefront. You will need a NOOK account in order to download the app. After the app has been installed it has to be authorized with an Adobe ID. If you had previously used Adobe Digital Editions to transfer eBooks onto your NOOK you can use that same Adobe ID. Then click on “Get Books” to locate your library, browse or search the eBook and MP3 eAudiobook collections and, after entering a valid library card, check out and download the title to the app.
If you would like to view a more step by step process, check out these pages from OverDrive Help: