If being in India you have to look for information on any train, forget about asking locals on the platform, the workers themselves or even to queue at Enquiry.
This website allows you to find which trains go from point A, via point B, reaching a point C. It gives you full information like to which platform arrives, if it is arriving delayed today, and the average delay for this train. You can also know the prices of each class, the number of wagons that there are for each one and in what part of the platform they will stop (perfect to catch the best place when traveling without reservation!).
If you have data on your mobile, it will certainly be your most visited page on the days you have to catch a train!