Ummkaay, every seems to be getting stuck on the same points in the game, so I'm gonna post some help on the topics that crop up most often...
1) Dark Aeons DO NOT EXIST in the American version of the game. They are in both other versions.
2) They are beatable using strength, but the easiest and most likely only method of beating them is to get Yojimbo's overdrive full before the fight, using first strike on Yuna and summoning him before the enemy attacks. Then pay him as much as you wish, and hope he uses Zanmato. If not, reset and try again, same method.
3) The Chocobo Trainer is found in the North West corner of the Calm Lands. After you train your first chocobo, she moves locations, depending on where you enter:
-From the gorge to the North (Mt Gagazet): Just south and to the West
-From Bevelle/Macalania: To the East of where you enter
-From the Airship: Directly south
4) To enter the Remiem temple, you must train your first Chocobo. Then, ride it up to the entrance to Macalania, the way you came in to the Calm Lands the very first time. Then, continue to the extreme right of the screen, and examine the feather on the floor, near the broken bridge.
5) To get Anima, you need to have discovered all 6 treasures from the following temples:
1-Besaid (Beat Dark Valefor if you missed it first time)
2-Kilika
3-Djose
4-Macalania (Beat Dark Shiva if you missed it first time)
5-Bevelle (You WILL already have this one, no matter what)
6-Zanarkand (Return after beating Yunalesca to activate a new puzzle
YOU ONLY NEED TO HAVE OPENED THE CHEST! YOU DO NOT NEED TO POSSESS THE ITEMS! Possesing the same item gained from a different source does not work. The method of getting all of these treasures is described on the guide somewhere around here...dunno the link. Help someone?
I'll post more help later. If there are any other questions, dont hesitate to ask...I'll reply. Some day.
(I hope doing this was ok?)