With the advent of EoF, both flavors of lvl 25+ druid (warden & fury) can port themselves and their group members to any one of 5 different locations. These include Antonica, Commonlands, Greater Faydark, Butcherblock and Steamfont Mountains.
To get your port spells, you will have to visit each druid circle (a ring of standing stones that looks like Stone Henge) and harvest a leaf from one of the bushes located inside the ring. This will start a quest for the spell to port to that ring. The 5 rings are located here:
Antonica - Just East of the KoS portal, in the forest
Commonlands - In the middle of the plains West of Crossroads
GFay - West of the old Kelethin acorn lift
Butcherblock - East of the ramp coming up off the boat
Steamfont - SouthWest of the largest impact crator on the West side of the map
Having harvested a leaf, you will return to visit the "portal trainer" inside the grounds of the Temple of Life (for Qeynos) or in the South East part of Kelethin. (There should also be one in Freeport but I don't know where.)
Once you give each leaf to the portal trainer, she will open a portal that will take you back to the ring where you can complete the quest and receive your new spell.
When you wish to travel somwhere, casting the spell will open a clicky gate that will take you back to that ring.
In order to port your group, each player who wants a ride will need to have visited the ring and harvested a leaf. This is a one time requirement - one leaf and they can get a port to that ring any time they have a convenient druid!