You need Indian mobile number to open account with irctc.co.in so that you can book E-Tickets online.

Source: As worded by Indian Railways, Government of India

Cancellation and Refund of E- Tickets

The electronic reservation slip cannot be cancelled at any regular counter of the Railways. The electronic reservation slip can only be cancelled online.

Cancellation Before Charting

Source: As worded by Indian Railways, Government of India

Source: As worded by Indian Railways, Government of India

Anyone of the passengers/the passenger booked on the tickets issued from computerized Passenger Reservation System (PRS) and internet (i-ticket), undertaking journey in AC-3 tier, AC-2 tier, 1st AC, AC Chair Car and Executive classes, have to carry anyone of the nine prescribed proofs of identity (in original) during the journey and produce the same as and when required failing which all the passengers booked on that ticket will be treated as without ticket and charged accordingly. The list of valid proofs of identity are as under:

Source: As worded by Indian Railways, Government of India

You can contact the Reservation Enquiry Counters at your nearest Computerised Reservation Centre or call the Interactive Voice Response System, available at major stations. Remember to always quote the 10 digit PNR Number indicated on the upper left hand corner of your ticket, to find out the current status.

Source: As worded by Indian Railways, Government of India

If you don't have any ticket, you may approach the Train Superintendent/TTE after purchasing an unreserved ticket from the booking office as specified in the following table. The TTE will allot the accommodation, subject to availability.

Source: As worded by Indian Railways, Government of India

Source: As worded by Indian Railways, Government of India

Source: As worded by Indian Railways, Government of India

Source: As worded by Indian Railways, Government of India

Yes, you can. In fact, you can book your ticket for any train on the Indian Railways network, from any originating station to any destination* at any of the 2926 Computerized Reservation Centers, across the country. With the network of New Delhi, Mumbai, Kolkata, Secunderabad and Chennai Passenger Reservation Systems, you can now book your onward and return journey tickets from any Computerised Reservation Centre nearest to you - not just from major railway stations. This networking makes reservation of tickets faster and simpler.