Hi Liesa, I don't have the time to do the whole how to take a train in Germany update now, but I think before you are off to bed, I should at least post a teaser. The type of train you will be on does not have an engine in the front, only a cabin for the engineer. You can walk all the way to the front (or the back) and enjoy the view along the tracks:
And this is where you can get your coffee (3.20 Euros, about 4 $ at the moment). They even sell latte and cappucino.
And this is what you can look forward to after your train ride:
Hope this cheers you up a bit!!