If they're necessary it'll be ok,that can't be helped,I'll avoid reading the majority of other,non essential ones where possible though.It's not always obvious what skill you'll be levelling by the books title,and I'd hate to ruin the run of perfect 5's I'm on.I'm leaving the MQ until much later anyway,so those books won't be a problem,if at all,for a while.Thanks for the help.
There's a problem with your approach. It's impossible to know which books will level you up in the first place. They don't look any different than any of the normal books and just the simple act of picking one up will activate the skill increase. So you'd have to avoid picking up or reading
any books in the game, which isn't really all that practical. Some books are quite valuable as loot and others you have to read in order to advance a quest. You're being far too nit-picky trying to avoid skill increases that way, especially considering how few and far between they are.