Easy experience:
To easily gain experience, find an area with strong battles and defeat
all enemies except for one. Then, put everyone in the party except the
characters you want to level up on the sidelines. Kill the remaining
enemy. All characters in battle will split the experience point total,
while all characters on the sidelines will receive 10% of their full
experience regardless of the number of characters on the sidelines. So
you actually gain more experience by keeping most of the fighters on the
sidelines.
Legend Of Zelda reference:
Enter Baba’s place, and climb the ladder to the right. Talk to the ghost
and he will say “It’s a secret to everybody”, and give you 5,000 Zeni.