Progress through the Artemis Path until you unlock the Anomaly
Visit the Anomaly and speak to the Exocraft vendor
Purchase the Exocraft Geobay blueprints with Salvaged Data
Build the required Geobay for the Exocraft you want
Summon the Exocraft from the built Geobay
Unlock additional Exocraft blueprints from the Anomaly as needed
Build the corresponding Geobays to access each Exocraft
Use Exocraft Summoning Station or freighter upgrades to summon them more easily