Final Fantasy X Tips

Easy AP at low levels
To do this, all you need is a weapon with Overdrive-AP, and optional triple overdrive and/or AP to making AP faster.
Them equip the weapon on the caracter you want to train, then go to the monster arena, choose fight monsters and tape down the [X] button, this will make you fight Dingo over and over, then go to eat or something and in about 3 hours of fighting Dingo you can have 99 S.LVL.

This is possible even at VERY low levels, 'cause Dingo has 25HP or something.