After reclaiming baggage, follow the signs "Bahn/Railway" to ticket counters and machines. Once there, follow the instructions (available in English) on the machine; you’ll have to simply press the left (red) key at the bottom where it says "Zurich City" (make sure that the display shows "2 Std"). The machine will prompt a request for 5.40 CHF; it accepts either coins or CHF 20 bills, in which case gives back change. The ticket is valid during the next 2 hours for any train to Zurich as well as for the trams and buses in the city (streetcar, Strassenbahn). To reach the city take the appropriate train on platform 3 or 4, reachable with an escalator. Trains to city centre leave approximately every 10 minutes and the ride to the main station (Zurich HB) takes about 10 minutes.