The U-Bahn (metro) and S-Bahn (commuter trains, underground in the city centre) are the quickest way to get around the different areas of Hamburg. They are marked by S- or U- and a number. Each station has a map showing the route; note the ultimate destination of the line and look for that on the trains and signs. There are vertical signs on the platforms that show the stops and the length of time it will take to get there, as well as overheard screens. One-way tickets cost €2,50 (children €0,90) and must be purchased before boarding. You do not need to validate the ticket but it should be with you for the entire ride. Random checks may lead to a steep penalty if you are caught riding without one. If you have any hesitations, try asking a local - Germans are typically helpful when it comes to transportation.
The buses use the same tickets, which can be bought on board; pick up a transport map at the tourist office.
Full transport information in English can be found at www.hvv.de.