You can buy tickets online or at a self-service machine at the station
For buying tickets online:
You must always hold a valid ticket to travel. You’ll need to bring your Smartcard to your chosen station to collect your smart ticket. If you have bought your ticket online two hours or more ahead of travelling, you’ll be able to go straight to the gate to tap in. If under two hours, you’ll be able to load your ticket onto your card at one of the ticket machines and then touch in at the gate.
Buy at self-service machine
At the station you can only buy your tickets from the station ticket vending machine. Hold your c2c Smartcard on the reader then select and purchase the ticket that you want. After you’ve purchased the ticket hold your Smartcard on the reader again to load the ticket onto the card. Instructions will be displayed on the machine to help guide you.