Hey here's 2 codes for registration:

5BWP7AHX
P6QUJHNS

How To register a friend code:
1/Create a Square Enix account
2/Log into your Mog Station
3/Manage Service Option
4/Enter Recruitment Code before your first month payment.

Use the code you will recive
• Friendship Circlet Increases EXP earned by 20% when level 25 and below.
• Aetheryte Ticket x 99 Players in possession of an aetheryte ticket when using Teleport will not incur a gil fee.
• Ballroom Etiquette - Improper Greetings Using this will unlock a new emote. Fist Bump (/fistbump, /brofist)
• 10 Silver Chocobo Feathers Trade to the Calamity Salvager NPC for special items. The Calamity Salvager NPC can be found in Limsa Lominsa, Gridania, or Ul'dah.

Have fun and enjoy the game! If you happen to get on the leviathan server (I think it's closed off now and it's high pop and hard to get into) I can help out. You can also leave me a message on the forums or ask anyone in the community for help!