The recipient of this (proposed) gift doesn't own or use computers or mobile phones.
I have to work through the manuals of all new devices with her. (More than once, but I love her)
The Kindle is ultra-easy. If you have wireless at home, I dont think you need to spend the extra money to get 3G. I keep the wireless turned off generally, cause it uses up more battery, and I'm worried that I might accidently buy a book I dont want, cause it really is a couple of clicks to buy/download books.
We buy books every couple of weeks, or before a business trip, and have a little stash there that we can read. But for general use, all you need to know is how to turn it on and how to turn pages. If there is more than one person using it, we have learned to put bookmarks into books, so we can work out where each of us is up to if reading the same book. (my daughter and I fight over it). If only one person using it, it comes straight back to the page where you were up to.
Now we have more books downloaded, I've found it helpful to make "groups" of books, so we can find them more easily. It takes 2 clicks to do that. So, everything is really easy and straightforward. There are no "extras" for confusion.