I don't set a specific goal, but I have downloaded several that I either hadn't ever read in my youth, or couldn't remember well. This lead me to read Jack London's
The Call of the Wild and Kipling's
Captains Courageous, both of which I hadn't read somehow. (And, I might add, both of which I thoroughly enjoyed.) Then I added a couple of Steinbecks I should have read but never did, and some Jane Austin. Oh, and Alexandre Dumas. And then some Elizabeth Gaskell, since I've enjoyed the adaptations of them so much.
I suppose I ought to get more formal about it, but really, I read for pleasure. So if they're on my Kindle, they'll get read sooner or later.