Oh don't worry, I totally understand. There's so many wonderful books here!

[ Which is part of why she chose to work here. Getting the gil she needs for housing and have all the time to be around these books? Not to mention it's a lot of good information to have when she goes out adventuring. ]

Oh, and to answer your question, I believe the limit is thirty! Although that's only for books that you take home.

[ You can have as many as you want while you're in the library itself, of course.]