[Zempten]

Hello Everyone
I'm going to compile some of the information I've found out so far. I hope this helps you guys when you guys start.

Getting Started:

You'll want to head to the Cavernous Maw in Battilia Downs Located at H-5. Once you enter, you'll get a CS and then be taken randomly to either the Cavernous Maw in Sauromungue Champaign, Rolanberry Fields, or Battilia Downs.

Starting Campaign:

From here on you can goto whichever nation you'd like to get a Recommendation Letter which works like the following. . . .
Windurst: Crawler's Nest
Talk to Kalsu-Kalasu for Key Item: Green Recommendation Letter. You can find Kalsu-Kalasu on a platform to the right once you zone into Crawler’s Nest. It’s about a 30 second walk. Can’t miss him. Afterwards head to Windurst.
Bastok: Eldieme Necropolis
Talk to Turbulent Storm for Key Item: Blue Recommendation Letter. You will find him within 30-45 seconds of walking straight from entrance of Eldieme Necropolis @ J-10. Now head to Bastok.
For Bastok People, here is a really nice guide from someone at Blue Gartr
San d'Oria: Garlaige Citade
Talk to Randecque for Key Item: Red Recommendation Letter. Randecque is found on the 2nd floor or GC @ I-6. You will reach the 2nd Floor by heading towards I-7 of the first map. Now Head to San d’Oria . You will need to talk to Mainchelite in Southern San d'Oria. He is near the AH of old Southern San d'Oria or if you want the position is I-9. He will tell you to find 3 ??? in East Ronfaure. You can find them at . .
H-8 by the Campaign Fort
I-8 in the water under the mini-waterfall
J-7 in the top left cornor of the square on the map. The ??? is in vegetation
Afterwards, head back to Mainchelite to finish up.
Welcome to campaign. You now have access to sigil, Allied Notes, Campaign Ops and all other Campaign related features along with. . . .

The effect remains even if you take them off.
Duration: 60 mins
Goes Away when you attack or become attacked
Doesn't stack with BRD movement songs
Recharable Unknown BUT you can purchase another one for 980 Allied Notes
Note: I would advise you to do the Map quests as well while your in these dungeons/safeholds. Look below for directions.
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If you click on San d'Oria (under the "San d'Oria: Garlaige Citadel - I made it red so you can see it easiar), it'll open up a new page that has pictures that show you how to get to the maw and to San d'Oria