Mary, my nook is the basic WiFi, no 3G one too, actually the guy at B&N talked us out of the one with 3G, and I got it before the color came out, but as it is backlit, I wouldn't want it anyway, don't need the eye strain from that, plus I am looking forward to reading poolside, can't do that with a backlit screen as it gets too much glare.
Brandi, my folks got Kindles for each other for Christmas, but so far we can't lend between nook and kindle. I got my nook over the kindle primarily for the ability to take it into B&N if there is a problem with the battery, etc and they can correct right there, instead of having to send it in and be without it.
Even though you can't get your library to work, Mary, you can search under free ebooks and it will pull up a bunch, that's what I did, searched under free ebooks, then under the word free, then under free scifi, etc. till I found stuff I wanted to read that was free and downloaded about 30 books before the trip, some of them I thought were really good. Also, they usually have a free ebook on Friday's.