Since I will not be traveling any time soon (lot's of circumstances don't work for us right now) I have been traveling vicariously through you tube videos and have been binge watching train travel through Europe searching routes I have been on and reliving my own journeys (Search train travel Paris to Nice, train travel Rome to Florence etc) . The video's also brought back an event I had totally forgotten about, on one of our train journey we were given little goodie bags with some snacks which was a nice surprise and much appreciated. When I travel I am so concerned about the actual journey that sometimes I do not stop to look and really see the train station and these videos have allowed me to see things I never noticed especially the architecture and shops. Making a mental note for our next trip to get to the station early so I can soak it all in.
If you have never taken a train before (and I never had prior to our first trip to Europe) these videos are an excellent way to orientate you for what to expect, how things work, how to buy your train ticket, how to understand the reader boards and how your Bin/track will show up 10-15 min before your train leaves and to see the rush of people going to the same bin/track. Some of the videos also explain how to find your car, then your seat. They show you the difference between 1st class and standard to help you make a better informed decision. They show the meals served, the food car and the restrooms.
Some of the videos show from start to finish arriving at the departing station to the arriving station all the way to the street to grab a taxi. There are lots of website that provide excellent descriptions and vlogs that tell how they navigated, but there is just something about seeing it actually happen that may provide more confidence in the process.