My Kindle is touch screen - the one I didn't buy had buttons and I couldn't work out how to make it go.
With the touch screen I managed to sort out the controls very quickly and I even have books sorted into different categories, I use the sync thing for Amazon and down the wire from Calibre for stuff I hoover up off the internet.
the first one I had went do-lally tap shortly after I got it, and would not reset, but I took it back to the shop and they gave me another. It has been fine ever since.

A lot of stuff easily found on the internet is not worth inconveniencing the electrons to take a copy and stuff it into the memory of the device, but with a bit of searching quite a bit of interesting reading surfaces. I particularly like the old sci-fi stories. I had them in paperback but they disintegrated, after turning yellow then brown. I hope to live long enough for the really classic stories to be available free, or to have enough money to buy all of the books I'd like, and then to live long enough to read them all.