Higher than 1024x1024 background rendering: 
Note: This procedure involves editing a registry value; do not attempt this if you 
are not familiar with working with your system registry, as a mistake can cause 
serious problems with Windows. Start Regedit and use the "Registry/Export 
Registry File" menu option to create a backup copy of your original registry. Use 
the following steps to set the background textures past a 1024x1024 resolution. In 
Regedit, Go to "HKEY_LOCAL_MACHINE", then select "Software". 
Select "PlayOnlineUS" and the "Square Enix" folder, then the "FinalFantasyXI" tab. 
You should see two "strings", "003" and "004". Double click to open them, and 
change the value for "003" to "800", then change the value for "004" to "800". You 
will notice the values to the right after you click "OK" will change to the 
corresponding resolution.

2048 x 2048: 800 and 800
1600 x 1600: 640 and 640
1280 x 1280: 500 and 500 

Alternate opening sounds:
In order for this trick to work, you must be running the Playonline viewer in 
windowed mode. Open the viewer, and as soon as the window shows up, click 
outside of the window, which will un-highlight the viewer. Instead of the standard 
music, you should hear cheering, followed by "Welcome to Playonline". 

Grass Cloth:
Synthesis Yagudo Necklace with a Wind Crystal. This will get you three spools of 
Grass Thread. Synthesis them with Earth Crystal to get Grass Cloth.

Raise White Magic level easily:
This trick is useful to level up much needed spells such as Protect, Cure, and Shell. 
Go to a local residential area and stand directly outside your Mog House. Cast the 
desired spell on yourself until you run out of MP. You can also cast it on other 
players running in and out of their Mog House. Once you have run out of MP, run 
into your Mog House, replenish it, exit, and repeat. This saves a large amount of 
time from having to heal after casting. You can level up magic by casting the spell 
on yourself, despite if you already have the enhancement on yourself or have 
100% HP. Keep casting and it will level up.

Easy gil:
This trick requires two characters. When starting a new character, you are always 
given an Adventurer's Coupon. When given to the correct person, you will obtain 
50 gil. Make two characters and have the character that will be your main 
character be in his Mog house (preferably in order to get to the Delivery Box 
faster) and have the second character go to the Auction House in which ever 
country they are in and deliver their "Onion" weapon and Adventurer's Coupon to 
the main character. You can use the Adventurer's Coupon repeatedly. When the 
main character has received the items, delete the second character and make a 
new one with a new coupon and weapon. As for the weapon, put it up on the 
Auction House for about 100 to 200 gil. You can repeat the process as many times 
as desired.

Whenever you get Crystals in battle, put them in an auction for about 100 gil each. 
You will make good money this way, or you can put them in your bazaar for about 
50 gil each.

At 6:00 in upper San 'Doria, the Wood Guild opens. There, you can by Arrowwood 
Lumber for 7 gil each. They sell for approximately 100 to 150 gil each. Also, the 
Luaun Lumber makes a profit, but not as much.

This trick requires three party members in Bastok. Behind the lighthouse in South 
Gustaberg is a bush labeled as "???". There, you can trade a Quus to have Bubbly 
Bernie spawn. He is not very difficult to defeat and drops a Steam Clock. If you 
set the second person to Quartermaster and make him wait at the entrance to 
Bastok Mines, he can run into the auction house and send it to the third person, 
waiting at the Mog House in Bastok Markets. The third person should take the clock 
to Malene in the very northern part of the town. She will give you 500 gil per clock. 
You can repeat this as many times as desired. Note: You can only hold one clock 
at a time, but you can have as many as you desired inside your delivery box.

San d'Oria: Recommended places to level up:
Go to the following locations in San d'Oria when at the indicated levels to level up 
easily.

Level 1 to 7: West and East Ronfaure
Level 7 to 13: Ghelsaba Outpost
Level 14 to 18: Valkrum Dunes
Level 19 to 25: Peninsula
Level 26 to 34: Jugner Forest
Level 35 to 43: Davoi (possibly)
Level 44 to 52: Xarbard
Level 53 to 60: Deep King Ramperre's Tomb
Level 61 to 75: Ifrit's Caltron 

Final Fantasy logo:
When you board the airship and the screen is on Steiner in the front of the ship, in 
the background clouds you can see the Final Fantasy symbol fly by every few 
seconds.