travel by trains in germany

Using www.bahn.com , you can look up connections from any street address to any other street address in Germany. No need to go through a reseller. U-Bahn and S-Bahn are for local or regional transport, IC and ICE are long-distance trains.

You can get S-Bahn rides on one ticket with the long-distance train, or buy local tickets which include all types of local public transport (S-Bahn, U-Bahn, bus, tram). Some of the long-distance tickets include a single trip (to and from the station, respectively) with any type of local public transport within the departure and destination cities (designated as "+City" on the ticket). In Berlin, these are limited to the "A" fare zone.

From Berlin I need to them get to Munich I am staying at Edina Hotel Wolf.

I guess you mean Eden Hotel Wolff, Arnulfstrasse 4. It's opposite the station. Exit the station to the north and cross the Arnulfstrasse. No need to take a tram. ;)

For your trip from Hamburg to Berlin do what Chris-s has suggested: at www.bahn.com enter in the "from:" field "Hamburg Reeperbahn" and in the "to:" field "Berlin Checkpoint Charlie" and select the first of the three offered destinations ("Kochstrasse(U) ..."). Now you will see the public transport means that you have to use in Hamburg and Berlin before / after your train ride.

If you want to look up details of public transport on top of Deutsche Bahn website.

in Hamburg: https://www.hvv.de/en/
in Berlin: http://www.bvg.de/en
in Munich: https://www.mvv-muenchen.de/en/index.html

Difference in usage: For Deutsche Bahn you buy a ticket in advance and someone goes around to check and "stamp" it (really or virtually). At public transport the advanced bought ticket needs to be validated / stamped BEFORE (trains and subway) or immediately when (bus & tram) using the public transport. Without having this you need to pay a fine if someone checks your ticket.

At public transport the advanced bought ticket needs to be validated / stamped BEFORE (trains and subway) or immediately when (bus & tram) using the public transport.

In Munich that's not necessary for tickets bought online. Cf. the Q&A section for the single ticket typs at https://www.mvv-muenchen.de/en/tickets-and-fares/tickets-daytickets/index.html

Basically, if the ticket is narrow and has "Hier entwerfen" printed on one end with arrows (triangles) to show where to insert it in the cancelling machine, you must stamp it. If it was purchased in advance, is too wide to go in the cancelling machine, and has the date of validity already printed on it, it doesn't need to be stamped.

"Hier entwerfen"

Lee, you might consider replacing the "f" with a "t". ;)