Taking the London Underground (the Tube) for the first time is easy if you follow the "Tap and Go" system. In 2026, you don't need a paper ticket; simply tap any contactless debit/credit card, or your phone/watch using Apple Pay or Google Pay, on the yellow reader at the gate. You must use the same device to tap out at your destination to ensure you are charged the correct fare (which is capped daily, so you never pay too much). To navigate, use an app like Citymapper or the official "TfL Go" app, which tells you exactly which line (color) and direction (last stop on the line) to follow. A few "unwritten" London rules are mandatory: stand on the right of escalators (the left is for walking), let people off the train before you board, and move down inside the carriage to make room. If you get lost, just look for the "Northbound" or "Southbound" signs on the platform, which correspond to the map. The system is incredibly intuitive, and there are staff in high-visibility vests at almost every station ready to help first-timers find their way.