I am currently level 16 and have been seeing (for example) +5 to damage spells or like +5 to fire spells. Do those actually give the same benefit to a fire spell? I know +5 to fire spells won't help my arcane spells while it would appear the +5 to damage spells would work on them all.
The other part of it is, at those levels is it even worth getting +damage or +specific spell or just stick with +INT?
I read an interesting thing about +spell damage and +healing on WoWWiki which shows the math, which is nice, but seemed overly complicated for my question.
Thanks for any information.