Retainers unlock through main story early in ARR. Grand company unlocks through main story early in ARR. Grand company seals unlocks after joining a grand company around main story level 20. Beast tribes unlock after stone vigil dungeon around main story quest level 40ish at each grand company. Heavens ward tribes unlocks after finishing certain quests in forelands and sea of clouds beast tribe area. Pvp unlocks at level 30 in Your grand company. Leves unlock in adventures guild after doing introduction quests for main story. The hunt unlocks at level 50 and second Lt in Your grand company.
https://youtu.be/HySdbCqzwhg grand company ranking up video
https://youtu.be/xwI-7GO-zhk unlocking pvp video
https://youtu.be/9SvlKtSmQLg retainer venture unlocking video
https://store.playstation.com/#!/tid=CUSA00572_00
source
videos are linked in description for grand company ranking up retainer venture unlocking and pvp unlocking.
I get mine from pvp wolf coins or whatever they called. Been grinding it for the mounts im close on getting second horse