Dragon's Dogma 2

Ferrystones are what you can use the fast travel back to cities. You will find them in chests, get them as rewards for completing quests, or you can buy them from vendors in the game.

You will also need to have a port crystal active in a city to travel to. When you get to new cities look for them and activate them.

If you need more information I have a quick video on how to do this and where to buy them.