Don't Buy a Nook
The Nook has a good screen but that's about it. The software stinks, for example, there is no way to organize books into folders so if you have many books you have to scroll through a flat list page by page to find them.
Also, there is no go to while reading - can't get to a specific page number.
Finally, the page turning is a PITA - the buttons are hard to click and the plastic is reported to crack after use.
I'm very sorry that I bought Nook and predict that unless B&N provides better software very soon the Nook will fail in the marketplace.