If you use the squire ability accumulate when enemies are far away you gain experience and JP very easily- this combined with JP up gives you lots of JP and makes you very strong (attack+1xhow many times you use it) by the time you reach the opponent. It's useful to keep squire as a secondary class for this reason early in the game. With Ramza I'd recommend yell over accumulate, and scream once you get it. I find Monk's to be a very useful class for a while.