hmm i see ur dilema

well i know u like cleric now after what he has said so
skills u need for Cleric1)Recovery Division-ur a fool if u dont get this , this is like the meat of a steak, without it cleric is not worth getting
2)Bless spell-Very useful against giants and pt mobs but really long cooldown so be careful with that
3)Ressurections-well there are different kinds of them but the basic res is primarily the one u need
4)Healing(opptional)- id say get for when ur in a thief/hunter party and most people are wiz so u wont have to be one u can change from attacking to support most ppl say not very helpful i say otherwise
5)Offering-Just really cool to use/have and not to sp costly
Hmm well thats all that i can think of of the top of my head
Ohh yea if u choose to get healing for the reasons i stated above u might as well get thoses skills that add int and str and phy./mag. def those are really useful to all partys u join