I have to admit, most of my trips to the library to read up have been "inspired" by quests. One of these days I need to stop by and do some thorough reading. As more books are introduced, I too would like to see better labeling so you don't have to go around clicking everything to see if something pops up. Now it seems so random. All in good time, though, I'm sure.

I would like to see more geography books and language books. Especially things that backup or elaborate on what NPCs already hint at...other cities or locations that are not ingame yet. That might be a slippery slope for the settings team, though. I'm sure they don't want to give too much away yet.

Anyway, good job with the books. I look forward to the day every shelf has books on it.
