There are two healing jobs at endgame (and actually, everything past level 30). White Mage, as already mentioned, is based off Conjurer, while using other skills from Arcanist and Thaumaturge, while the other one, Scholar, is based off Arcanist while using other skills from Conjurer and Thaumaturge. So either way, you'll want the same three basic classes leveled far enough to get skills from them. And that will also give you a chance to unlock and try out both types of healers and see which you like better.

One main difference between White Mage and Scholar is that White Mage is more reactive, with bigger heals for helping your party recover from damage, while Scholar is more proactive, with more skills for helping your party avoid damage. (In the high level dungeons where you have eight players in a party and two of them are normally healers, it's often preferred to have one healer of each type.) The other big difference is that Scholar is a pet class, with a fairy to control who also aids in healing your party.


Quote Originally Posted by Nyro View Post
Hope I don't mess up a build and have to start over.
There isn't really much in this game's progression that you can mess up. You can level any or all classes and jobs however far you want. Each class/job has a fixed collection of skills that you either get automatically by reaching a given level or receive for completing your class/job quests. You'll get bonus attribute points for each class which you can spend on boosting whichever stats you want (applicable only while playing that class) but even if you decide you didn't allocate them right, you can reset those points and reallocate them to a different stat.

Generally, you're going to want to put your Conjurer points towards Mind (boosts healing) and your Thaumaturge points toward Intelligence (boosts magical damage). Arcanist is a little trickier because the base class is considered a damage dealer, but at level 30 can become either a Summoner (still following that damage dealer pattern) or a Scholar (becoming a healer). Since it sounds like you're interested in the healer side of that, you'll likely want your Arcanist points in Mind eventually, but it's up to you whether to assign them there initially or start off putting some of them into Intelligence and then later after switching to Scholar get that reset item to move those points to Mind.