It seems class quests can be started at Rank 20~22 (I only just checked before going to grind to Rank 23)
The npc at the Archer's guild gave me a new quest - in my case "Filling the Quiver" and an NPC linkpearl.
I am currently in the process of doing the quest and I will post what kind of reward I get and if it starts a quest chain.
I am glad it is only in the 20s, and not like AF where we have to wait until much further along.
http://img191.imageshack.us/img191/6746/archer1.png
http://img580.imageshack.us/img580/7488/archerj.png
Update #1: Note to self, check the quest map instead of just going by the description. <_<;
Spoiler: show
Update #2: Side note - there are a lot of things to improve upon in 14, but god the CSs look amazing lol.
Spoiler: show
Update #3: Finished quest, I see no follow-up atm. Perhaps I need to be a higher level or wait for the next day FFXI/JP Midnight style.
http://img25.imageshack.us/img25/1976/archrew.png (Hurray Multishot ;x)