In such free time as I am allotted, I've started getting acquainted with it. Although there are no buttons (other than an on-off switch) and you convince the Paperwhite to do what you want it to by tapping the screen, navigation is actually pretty easy and I think will quickly become second nature. The screen is smaller than a paperback book but you can (with its preferred file types such as AZW and MOBI) choose a font and adjust its size.
So far I have only one gripe, and it's about Amazon's incomplete instructions. The how-to onscreen manual starts well, clearly explaining the moves you need to make and the menus, in something very like actual English instead of technobabble. So far, so good.
But after that it's pure sales promotion, herding you to the Amazon store. That's okay too; most Kindle users will want to buy some downloaded books from Amazon.com. I understand the company doesn't make money on the Kindles themselves, so it's reasonable they'd flog e-books from their own store.
So you have to go online and find tutorials, written and video, which are of varying quality. Free conversion software is available; Mobipocket Creator and Calibre seem to be most prominent (not, as I say, that you'd ever hear about them from Amazon). Once they do their job, you transfer the MOBI file to the Paperwhite via a USB cable.
It's not actually hard, but typically of software developers, they don't explain the conversion technique well. Through trial and error or, if you must, one of those "For Dummies"-type Paperwhite manuals (presumably), you get the hang of it. If I can, anybody can. I suppose the average eight-year-old today would understand the process quicker than I did.
Regardless of Amazon's rather petty withholding of useful information, the Paperwhite is life-enhancing, and a welcome diversion from our national Time of Troubles.