Here you will be able to find various tips and codes to help you on your Final Fantasy X journey. Please note there may be spoilers.

Airship Pass Codes:
You may access hidden locations by using the “Input” feature found in the airship command list. Please remember that all pass codes are case-sensitive.
Password 1: GODHAND
Password 2: VICTORIOUS
Password 3: MURASAME

Al Bhed Primer Locations:
1. Al Bhed Salvage ship
2. Besaid Village, Crusaders Lodge
3. S.S. Liki, engine room
4. Kilika, Tavern
5. S.S. Winno, Bridge
6. Luca Stadium, Basement B
7. Luca Theater, Reception
8. Mi’ihen Highroad
9. Mi’ihen Highroad, Newroad, North
10. Mushroom Rock Road
11. Djose Highroad
12. Moonflow
13. Guadosalam.House
14. Thunder Plains, Agency (When speaking to Rin, tell him that your study is going okay)
15. Macalania Woods
16. Lake Macalania
17. Sanubia Desert
18. Sanubia Desert
19. Al Bhed Home
20. Al Bhed Home, Living Quarters
21. Al Bhed Home, Main Corridor
22. Bevelle Temple (Must find immediately after the wedding)
23. The Calm Lands
24. Remiem Temple (Near chocobo)
25. The Calm lands
26. Omega Ruins

Gain Rare Items:
To get very rare items such as the Door to Tomorrows, and Winning Formula, capture all of the the monsters from individual areas (for example the Thunder Plains, or Calm Lands). After capturing all the monsters in that one area return to the monster arena and talk to the trainer, he will give you rare items that you can use to add powerful abilities to your weapons and armor.

Legendary Weapon Locations:
Tidus: Caladbolg
Race and defeat the Chocobo trainer in the Calm Lands. After winning the race, walk to the upper northwest section of the Calm Lands. The guard blocking a narrow pathway down into the gorge will have left his post, allowing you to pass. Tidus will then be able to use the Celestial Mirror to acquire Caladbolg.
Yuna: Nirvana
Capture all nine types of fiends in the Calm Land region. After collecting them all, return to the monster arena owner. He will produce a treasure chest, containing the weapon.
Auron: Masamune
Acquire the Rusty Sword, which is found on the eastern cliff of the Cavern of the Stolen Fayth in the Calm Lands. Take the Rusty Sword to the statue of Lord Mi’ihen on the Mushroom Rock Road. Place the Rusty Sword before the statue to reveal a glyph. Touch it to reveal the Masamune’s secret location.
Wakka: World Champion
Talk to the bartender in Luca Cafe. If she refuses to turn it over, it is because you have been neglecting to play Blitzball.
Kimahri: Spirit Lance
Active three of the Qactuar Stones on the Thunder Plains, then find the Qactuar ghost flying just above the ground at Thunder Plains-South. Follow it to a small ruined lighting tower on the right side. Press Square to send a bolt of lightning to the tower to reveal a treasure holding the weapon.
Lulu: Onion Knight
Return to Baaj Temple and dive underwater. Swim towards the doors to the north and fight Geosgaeno. After defeating it, search the southern part of the circular underwater area and look for a treasure chest containing the weapon.
Rikku: Godhand
Input the airship password GODHAND to open a secret location at Mushroom Rock. Move north to the end of this ravine, and use the Celestial Mirror on the symbol embedded in the rock face

Jecht Sphere Locations:
1st Jecht Sphere: Spherimorph Boss Fight, Macalania.
2nd Jecht Sphere: Besaid Village, to the right of the temple entrance.
3rd Jecht Sphere: SS Liki, on the bridge board at Besaid.
4th Jecht Sphere: Luca stadium, Basement A.
5th Jecht Sphere: Mi’ihen highroad, oldroad, south.
6th Jecht Sphere: Moonflow, South Wharf.
7th Jecht Sphere: Thunder Plains, South.
8th Jecht Sphere: Macalania Woods, South.
Auron’s Sphere: Mushroom Rock Road, Precipice.
Braska’s Sphere: Mountain Trail, Mt. Gagazet.

Hidden Locations:
There are several hidden locations on the world map that you can find by selecting specific coordinates while aboard the airship. Move the pointer to the find coordinates and press X to search that region.
Location X coordinate Y coordinate
Baaj Temple: 11-16 / 57-63
Sanubia Desert: 12-16 / 41-45
Besaid Falls: 29-32 / 73-76
Mi’ihen Ruins: 33-36 / 55-60
Battle Site: 39-43 / 55-60
Omega Ruins: 69-75 / 33-38

Control your Chocobo!:
Press and hold L1 + L2 + R1 + R2 and your Chocobo will be easier to steer

The Overdrives:
Auron: Get different Jecht Spheres laying about the world. Some of these will give Auron a new Overdrive. You need to ascertain all ten to get Auron’s final Overdrive. You can find the Jecht Sphere locations above.

Kimari: Use the Dragon Sword ability to drain HP and MP from the enemy. If the enemy has a Blue magic skill that Kimari can learn, he will gain it automatically. The only one that is difficult to get is “Sunshine”, which you obtain from the Omega Weapon.

Lulu: Rotate the Right Analog-stick clockwise as fast as possible. The number will go up the more you rotate it. The more you level Lulu up, the easier it is to cast multiple spells.

Rikku: Rikku’s Overdrive combines items to create special attacks and power-ups during battle. You have to choose any two items to combine. You can even use two of the same kind of item.

Tidus: Repeatedly use Tidus’ Overdrive. After a while, he will learn his next Overdrive.

Wakka: You can win new Overdrive roulette (slots) types in the Blitzball Ranking as well as in Tournament modes.