I got a new Nook yesterday, and it's great. Like all technologies, the latest version of this E Reader makes the one I was using just a week before seem like an antique. Did I mention that it works great?
Then I noticed that I would have to transfer my non-Barnes and Noble epub books over from my computer. So I plugged in the USB cable, opened up Adobe Digital Editions, and nothing happened. Then I updated Adobe Digital Editions, and that didn't help. Then I entered my Adobe ID on the Nook and that didn't help. So what I discovered was something called "Android File Transfer" and that's all you need.
I opened up the folder with my books, plugged my Nook in with its USB cable, opened Android File Transfer, did a drag and drop into the window for my Nook. It works! The books are all there! No need for Adobe Digital Editions at all.