Hey for those of you who have a Nook --- how do you buy books on it? My BIL got SIL a new Nook for C-mas, and we were gonna get her some kind of gift card but we have been procrastinating lol! If I got her a Barnes and Noble gift card could she use it to buy books for her new toy?? I didn't get any answers from their website, and I wanted to be sure before I spent my money there. Yeah yea, last minute shopping I know!