Things you should know about maps for the Warsaw Metro.
Note that the images shows two metro lines. The East West line is operating but being extended. Even in its early stage of construction there is heavy passenger traffic.
You can get maps of the Warsaw metro at any of the tourist information service points in Warsaw. They are free.
There are also maps outside the ticket required areas at each of the metro stations. They are wall maps that give you a rather large view of the metro and the streets around the various stations.
Similar maps are also on the walls of each of the cars on the line.
Do also note that there is a “line map” above each of the car doors. Commuters use this to track their progress down the line.