there are two healing type things, 1st is alchemist you get that one from in chapter one you talk to clasko at mushrromrock road, to get whate mage wich only does battle effects you need to in chapter one you go to besaid island and beat that mission and just learne new attacks with them and you got your healer
oh ive got both of them i thought there was a secret dressphere called the healer lol my bad