To fast travel in Stalker 2: Heart of Chernobyl, you need to follow these detailed steps:

1. Locate a Guide:
– Guides are specialized NPCs that can facilitate fast travel. They are marked on the in-game map with a green crosshair icon and can be found at established settlements like Zalissya, the Chemical Plant, and the Garbage Dump.

2. Meet the Guide:
– Approach one of these Guides and tell them that you are “looking for a guide.” This will prompt them to offer you locations you have previously visited that you can be taken to.

3. Unlock Fast Travel Destinations:
– To use fast travel, you must have already visited the destination with the Guide at least once. This means you need to physically walk to each place with a Guide before fast travel becomes available.

4. Select Your Destination:
– Once you have unlocked the destination, you can select it from the Guide’s options. Each destination will have a price associated with it, typically in the form of Coupons, which can be quite expensive.

5. Pay the Fee and Fast Travel:
– After selecting your destination and paying the required Coupons, you will be teleported to that location after a black loading screen.

6. Considerations:
– Fast travel is not available from anywhere; you must physically speak to a Guide at a settlement to use this service. Additionally, if a Guide is disrupted (e.g., after a settlement is attacked), their services may be temporarily unavailable.

By following these steps, you can effectively use the fast travel system in Stalker 2: Heart of Chernobyl to navigate the dangerous and irradiated environment of the game.