Transport in main cities are usually chaotic and if you are going to be there for three days or a week, you'll need a map of Transport. London is one of the most important cities in the world and it's full of tourists.
The Transport of London is mainly the Tube, but it also offers DLR, tram and National Rail. As you know the tube stations are divided in to zones and it's extremely useful to know the zone where your hotel is located or the place you are going to visit in order to know the tickets and the fares or how far they are.
Travelzones are important and they are very well shown in this map. This map of the Transport of London is easy to understand and you'll find the underground stations, trams and other transport at a glance.
Picadilly Circus, Oxford Street, Trafalgar Square, Hyde Park,... all of them are waiting for you in London.
Don't hesitate, download and print this map of transport of London, it will be really useful in your next holidays.