2. A Job here provides transferable secondary skills that can be used alongside another Job's fixed primary skills.
What commodity is required in order to learn these secondary skills?
From Quiz Get a Job!
Answer:
ABP
ABP -- or Ability Points -- are earned after successful battles. Most regular enemy groups give 1 ABP, so earning most abilities is slow, especially considering that some of the better ones require hundreds of points to learn.
The regular Jobs have a secondary skill slot that utilises a chosen ability learnt from other Jobs. For example, if you earn 45 ABP in total with a fist-fighting Monk, the Barehanded skill is unlocked. Equipping this skill in a healing White Mage's secondary slot will give them equal attack power to a Monk when unarmed, and will thus provide them a bit of physical bite they otherwise wouldn't have.
The squirrels in the Jacohl cave are a decent early source of ABP (5 for the Skull Eaters) as are the stone knights in the Bal/Val Castle basement (8 ABP for 5). Lategame wise, enemies in the very last area of the N-Zone/Void are packed with ABP; the Movers can give 199 ABP in one fight!
In terms of the incorrect options, EXP is used for increasing levels, which in turn increase Max HP, MP and base stats. Gil is the game's currency, and crystal shards house the Job souls within.