The Indian Railways IRCTC website opens up for train reservations at 8 AM, or 10 AM if you are making a reservation under the tatkal scheme, and the tickets are often booked within minutes. When every second matters, the Magic Autofill tool can improve your chances of getting a train ticket.
Fill the passenger details and click I'm Feeling Lucky. You'll see a new Magic Autofill button that you need to add to the bookmarks toolbar. Now switch to the Indian Railways website (irctc.com) and click the same Magic button to fill the reservation form in one click. Or see this video demo on YouTube.