Complete the Chocobo Quest so that you can ride your own Chocobo in Final Fantasy 14: A Realm Reborn

To get your own Chocobo in Final Fantasy XIV: A Realm Reborn, you must first complete the Chocobo Quest.

The minimum lvl requirement to obtain this quest is 20

You must also be a part of the Grand Company. You will get the Chocobo Quest around 2 quests into the Grand Company quest line

The Chocobo mission asks you for a serpent chocobo insurance. You will need 1,000 Grand Company Seals for this, which you can get by farming FATES

You can then turn in those Grand Company Seals to the quartermaster for the license right next to the guy who gave you the quest.