Can I sell books and scrolls once I read them? They are the biggest cause of clutter in my inventory. Also, do I have to hold on to the contracts or can I sell those also? --- How to start a fight in the internet: 1. Express an opinion. 2. Wait.
If an item says that you have read it, there is no longer a reason to keep them. Books can be sold to some merchants, but you always get a lot less than it cost. You can put them into storage at an inn if you want. I usually just drop them (drag an item onto the drop icon left of your alchemy ingredients).