So far? Only about five. I had a final today, a paper due tomorrow, and another final on Saturday, so I'm trying really, really hard not to play with it. Even though it keeps staring at me.
I loaded a couple of the 100 classics I got from Sony and then two Lit ones I bought at Books on Board and then I converted to see if they worked...and they did. They even have the cover art.
Best graduation gift to myself ever.