You should wait until later in the game before switching jobs and experimenting a lot. How far are you in? Whenever you get to Edea's homeland (the final crystal) that's a good time to start grinding. Just change the game speed to Fast, spam 4x attack for everyone (press the Y button to enable auto-battle, which repeats moves you did last time) and all you have to do is move the Circle Pad.
For the longest time, I didn't switch jobs. Until you hit some of the later bosses (especially on the way to the true ending) it's just not necessary. I had:
Tiz - Hunter class (the wolf costume from Artemia), using the accuracy up + sword mastery thing from Knight class
Anges - White Mage, nothing fancy, knew basic Black magic as well
Ringabel - Thief for speed + bow, knew basic White magic to back up Agnes
Edea - Thief for speed + sword w/Knight's sword mastery skill or whatever. Knew basic black magic
You're supposed to pick abilities you'd want someone to have, then level up until they can use it for another class (if you want them to switch classes). Having the Merchant's money-throwing attack is awesome (does damage regardless of enemy defense), so sometimes I would have two characters equip that, and default for 4 turns, then spam it.
For the longest time, I didn't switch jobs. Until you hit some of the later bosses (especially on the way to the true ending) it's just not necessary. I had:
Tiz - Hunter class (the wolf costume from Artemia), using the accuracy up + sword mastery thing from Knight class
Anges - White Mage, nothing fancy, knew basic Black magic as well
Ringabel - Thief for speed + bow, knew basic White magic to back up Agnes
Edea - Thief for speed + sword w/Knight's sword mastery skill or whatever. Knew basic black magic
You're supposed to pick abilities you'd want someone to have, then level up until they can use it for another class (if you want them to switch classes). Having the Merchant's money-throwing attack is awesome (does damage regardless of enemy defense), so sometimes I would have two characters equip that, and default for 4 turns, then spam it.