How do you settle for eBooks using the Barnes and Noble Nook?

I've been looking into buying the Barnes and Noble Nook, but I'd like to know some things about it first.
How do you remuneration for the books you download on eBooks using the Nook? I know that certain classics are free, but I'm 17 and I'm kinda into reading the more modern fantasy books.
Does the blind illuminate itself or do you need to bring your own light? I'm guessing you'd need an LED lighting attachment because of the E ink but I'd still like to know for sure.
What is the original warranty for the Nook? All I know is that there is an added 2 year warranty available for extra money.

Thank you for all your help! :D
Answers:
1) you will most likely set up a barnes and member of the aristocracy account. that way it can keep track of accounts you bought in case you break your nook and have to capture a new one you will be able to re download your already bought books.

2) yes the screen can illuminate. (supports approaching 16 shades of gray just FYI)

3) it will have a 1 year warranty of the day you purchased it, but yes in attendance is also a 2 year warranty you can buy.


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