Get a PDF copy of the tube map and have a stare at it, then graduate to doing it without the map. https://tfl.gov.uk/maps/track/tube https://tfl.gov.uk/maps/tr

Get a PDF copy of the tube map and have a stare at it, then graduate to doing it without the map. https://tfl.gov.uk/maps/track/tube https://tfl.gov.uk/maps/track/tube Intermediate mode: make yourself a black and white copy of the map by printing it out.