- This maximum skill/spell restriction means you'll very likely have to erase/unlearn some skills to make room for others. And then find another skill book if you want to learn an earlier spell you had but deleted for whatever reason.
I just wanted to address this for you real quick. While I can't recall the name offhand, there is a mod that makes spell books permanent, so once read they do not disappear from your inventory. Using a mod like this would allow for more experimentation, if you wish.