Tickets cost 1,00 euro. You can buy them in the newsagent immediately outside the station and downstairs at the beginning of the metro-station. If you have to stay in Milan for only a day maybe it's better if you buy a daily ticket that costs 3,00 euro. There are also the weekly card, the monthly card and the yearly card.
There are three routes:
THE RED LINE: It was the first one and was bulit in the years 60s;it takes to the main places as the trade fair, the San Siro Stadium,piazza Duomo, corso Buenos Aires, the Cadorna railway station and piazzale Loreto.http://www.rajatabla.it/milano/metropolitana_linea_rossa.htm
THE GREEN LINE: it reaches the main railway stations. Getting off Famagosta stop it's possible to take the bus going to Forum di Assago.http://www.rajatabla.it/milano/metropolitana_linea_verde.htm
THE YELLOW LINE: it was the last to be done.http://www.rajatabla.it/milano/metropolitana_linea_gialla.htm

