While the guide is pretty okay, it has it's issues.
1)You HAVE to party to go to Toto at the right level, but that's a given.
Realistically all you need to do to level fast is:
F1->F4 of current MM, then repeat F4
Leveling getting slow? Move to next MM and repeat
As for training outside of MMs (at Farrel) it's not that good experience, rushing Alvida/Artis is better at lvl 25.