By the time I hit puberty, I was enjoying books with sex scenes. I read De Sade before I was out of high school. WAY BEFORE. Funny thing, it did not warp or pervert me. Kids can get anything they want on the net, so if you write a book that presents decent values, I'd consider that far more...
I have the Nook, and it's perfect for what I use it for. I love the fact that it will handle multiple formats, epub, lit, html, pdf and some others, I think. There is a free program, Calibre, that will run on your PC and handle all major formats and convert one to another. It's great reader...
I've been retired for years, now, but my foster daughter is just getting started in her career, though she's still not sure what that will be. She has a BA is Psych, has only 100,000 in debt and has realized her degree will never pay her a single cent. Over 40K a year, and while it was fun...