I booked a round-trip train trip on the City Night Line from Amsterdam to Prague using bahn.de. I received my
e-tickets and found that it is all in German. How do I find out what my berth and coach is?
Ask someone who reads German. Coach should be "Wagen". The berth is probably "Platz" or maybe "Sitzplatz". If that doesn't work, post the exact wording. Or, you can contact me by PM, and I will send you my email address, and you can send me a scan of the ticket. Or, you can send me the electronic copy (Don't worry, I can't use it without your credit card).
What Lee said. In addition, the track number, if listed, is "Gleis".
I've used three online tickets (for day trains), and they all had the track (Gleis) shown on them. They were all for travel inside Germany. I doubt that the track number for Amsterdam, where you get on, or Prague, where you get off, will be shown on the ticket.
You can also try putting all the wording you question into Google Translate.
Or you can just let Lee translate it for you if you want a real translation.