Final Fantasy XIV: Stormbringers has arrived today in early access form before its proper July 2 launch, and you can either dig in with an existing character or try out the two new jobs: Gunbreaker or Dancer.
So here's the rub! If you want to take on the Gunbreaker, you'll need to have a level 60 combat job. Head to New Gridania at the following coordinates and you're set: X:11.5 Y:11.9. It will start at level 60, so you'll likely work your way through Stormblood content as you approach Shadowbringers. Note that the Gunbreaker is a more advanced tanking class according to Square Enix.
For the Dancer, you'll want to go to the breezy town of Limsa Lominsa, on the Lower Decks: X: 9.8, Y: 12.0. The Dancer is a ranged DPS class and is one of the most beginner-friendly jobs in the game.