Bradster is right, you have to figure out what works for you as you go along - you'll find as you level what you need - you get better skills at analyzing fights, too, which is a big plus.

I'm running a druid/mage/lock combo right now, and the big pulls in Sunken Temple are kicking my butt, so it's "rework the macros/technique" time again - which I just went through running through ZF. I don't mind though, it's fun to start out from scratch *again*.