The easiest way to find your platform is to check the departure board at the station. Every major station has large screens showing departures and arrivals, and on these displays you can find your train by its number, its destination, and the departure time, along with the platform number. Station departure boards show real-time platform changes, so they're the most reliable source on the day of travel. Your ticket shows the train number, date, departure time, and usually your car and seat. Ticket or reservation details may also list a designated boarding zone or coach number, so keep your ticket at hand when you look at the board. In most cases the platform isn't printed on the ticket, because operators assign it on the day of travel. Arriving early gives you a buffer to get through crowds and find your platform, so plan to be at the station at least 15–20 minutes before departure, especially if it's your first time there or the station is large. If you're not sure where the station is, read
how to find your train station before your trip, and check
what your car/seat number is so you know exactly where to board.