Delhi's main train stations are New Delhi Railway Station, Delhi Railway Station (usually called Old Delhi Railway Station), and Hazrat Nizamuddin. The name of the station you need is printed on your ticket; if you can't find it or read it, check with someone in your hotel to be absolutely sure. New Delhi station can be particularly chaotic and consumer-unfriendly, so keep your wits about you.
For information and tickets, try to save time and energy by using your hotel's travel desk or a travel agent. Otherwise, you must present yourself at the International Tourist Bureau on the upper floor of New Delhi station, open Monday through Saturday from 8 to 8 and Sunday from 8 to 2 for the use of foreigners with tourist visas only. Unless you've saved the encashment slip from a recent currency exchange, you must purchase tickets in U.S. dollars or pounds sterling. If you don't have an encashment slip or dollars or pounds, you can purchase a ticket in rupees at the general ticket counter, open daily 9:30 to 8 on the ground floor, but this can be a long and complicated process. Before you board any train, you must have a confirmed ticket and a reservation, including a reservation for your sleeping berth if you're traveling overnight. When you arrive at the train for your journey, find your car -- the coach number is printed on the ticket -- and then find your name on the printout posted on that car.
Upon arrival in Delhi, if hotel touts approach you at the station to offer you a room or claim that your hotel is closed or full, ignore them.
International Tourist Bureau (New Delhi Railway Station, 1st fl.).
