I've been doing some Kindle research because I do want to purchase something. I don't "read" a lot anymore but I listen to tons of audio books in the car and while I'm sewing. However, I found this interesting little book on Amazon for 99 cents.
http://www.amazon.com/gp/product/B00...w_myk_ro_title
You have to download it to your Kindle or to your Kindle reader. It is easy to get the reader from Amazon. I have a MacBook Pro and just downloaded the reader.
Anyway, I found that book quite informative and I was excited when I saw the pdf capability as I know that would be useful to me in many ways.
For those of you who have the older Kindles you might also want to look at this book because the really older ones come with free 3G forever and Amazon doesn't offer that anymore.