Check out the Mobileread Library and the Singapore Library, which is for free!!! There is also a Deals & Freebies section where you can get lots of free books. There is a Georgette Heyer in the SonyStore today
I have 500 books on mine right now
It took me only half an hour and I was hooked for life and I never imagined to like them. Thought I am far too book-loving to like reading on a piece of hardware.
Turns out, I hadn't the faintest idea what I like and what not.