To get an Oyster card in London, visit a ticket machine or Oyster Ticket Stop at any participating station. Choose the card type (standard or visitor) and load it with credit using cash, card, or contactless payment. Registering the card is optional but can provide added security. Simply touch the card on the yellow reader when starting and ending your journey on buses, trams, the Underground, and other TfL services. Top up as needed and remember that there is a daily fare cap for cost control. For the latest details and any potential updates, check the official TfL website.