comming back hoping for some advice

[preaceps]

Sup, left the game after PoP expansion, so a little behind the times.  Was 2 boxing when i left, 65 druid , 57 paladin.  Neither were that uber on gear, tho for the time the druid could heal a group np, and was often a MT healer in some of the older expansion raids.  I will be comming back and working up my new 3rd box a beasty to lvl with pally, then them to the druids lvl.  My question is what i need to know about expansions that i missed, as well as can a druid still heal in the high lvl,75-80 groups alone?

Also have a friend starting with me who will be a wizzy, making wizzy,pally,druid,and beasty

any comments advice welcome. thx

[Shieara]

The druids I group with can't really heal in the higher level zones without help. 

We're casual though.  Maybe with better gear/aa it would be fine.