Trains leave for Vigevano from Milano Porta Genova every 3 minutes. Tickets can be bought in the Trenitalia ticket office, or alternatively it is possible (and often quicker) to buy tickets and check train times using the Trenitalia self- service ticket machines (most of which have an English language option, along with other major languages). Tickets cost about 4 euros.
The fastest option is to take the motorway from via Lorenteggio in Milan. Firstly take the Tangenziale Ovest, then the SP 494 towards Abbiategrasso.