I 'checked out' an Adobe PDF ebook from my library and then connected my Nook to my laptop and launched Adobe Digital Edition. I clicked on the Library View icon in the upper left and the book cover showed up in the large right hand pane. My Nook was listed in the narrower left hand pane. I clicked on the book cover image and dragged it over and dropped it on the listing entry for my Nook. It is as simple as that.
As I understand it, when the check out period expires your Nook will no longer let you access the book. If you return it early using ADE on your laptop, the next time you connect your Nook it will update the status of the book. I don't know if it will delete the physical file from your Nook, but I suspect it does not.
As to Nook support, I gave up after holding for 30 minutes on the phone and emailed them my question about MP3 files. I have had no response. We are not impressed.
