Can someone give me instructions start to finish to get fast AP,,?
he absolute best way to get AP would be to use the Don Tonberry/Cactuar King method. They are both Monster Arena creations. To unlock Don Tonberry, you'll have to capture one of every enemy in the Cavern of the Stolen Fayth. To unlock Cactuar King, you'll need to capture at least one of each enemy in the Thunder Plains.
To exploit either of these enemies for massive AP gain, you'll need to create an "AP" weapon.
I suggest fighting One Eye (capture at least 4 of each of the "Eyeball" species((Floating Eye, Buer, Floating Death, Evil Eye, and Ahriman) until he drops Triple AP weapons (with at least one free slot, preferably two free slots) for whichever party members you want to gain massive Sphere Levels.
The Overdrive -> AP (10 Doors to Tomorrow) ability is essential to using this method, as it allows you to transfer OD gain to AP and acquire massive amounts of AP. You can Steal these 10 at a time from Ultima Weapon (20 for a "Rare" Steal) in the Omega Ruins. The Monster Trainer will also reward you with 99 of these if you unlock 6 Area Creations (capture one of each fiend from six different areas).
Customize the Overdrive -> AP ability on the Triple AP weapon you got from One Eye.
Then you can Customize (if you have room) the Triple Overdrive ability on that weapon to further increase your AP gain. To Customize this ability, you'll need 30 Winning Formulas, you're given 99 of these from the Monster Trainer after unlocking all of the Area Creations.
Finally, now that you have the AP weapon, you can go fight Don Tonberry or Cactuar King.
Don Tonberry Method
Enter the battle with one character in Stoic OD mode (your attacker, the person who has killed the most enemies, so that Karma (DT's counter attack) will deal a lot of damage to them), and the two others in Comrade mode, make sure they all have their AP Weapons equipped. Only attack DT with the character who has Stoic as his/her OD mode. Karma will then kill the Stoic character with a massive amount of damage, and greatly fill the OD gauge for each character, which is then transferred into AP. Make sure to revive the Stoic character ASAP.
After DT takes four steps forward, it will no longer counter attack with Karma, so you might as well Flee at that point. You will then gain a stupidly high amount of Sphere Levels for your work (capped at 99 Sphere Levels of course).
Karma's damage formula is simple enough. It's a counter, and based on the number of kills by the character whom it's targetting multiplied by 100.
Cactuar King Method
Have all characters enter the battle with Comrade OD mode and their AP weapons equipped. Keep in mind that the CK will Run Away occasionally, and you'll have to restart the fight. If the CK attacks a character with 99,999 Needles, that character will die and this will cause the other characters to gain an enormous amount of AP. Revive the character and wait for the CK to do this again. Flee after he's used this a few times on each character and you'll see that you've gained about 99 sphere levels for each of them.
from neoseeker.com