Hi, Does anyone know of the cheapest way of getting from Milan, Itlaly to Genova, Italy just for the day?

The trains are your best bet for this trip. You can work out specific schedules and costs at the Italian train website: http://www.ferroviedellostato.it/cms/v/index.jsp?vgnextoid=3fdbe14114bc9110VgnVCM10000080a3e90aRCRD The price of the trip will depend on the type of train you take. The cheapest option is a regional train which will cost you 8.75 euro each way (approximately £14 euro round trip). You don't need to book this ticket in advance, there are no reserved seats on the regional trains. This type of train makes a lot of stops, so it's around 40 minutes longer than an ICplus train on the same route. The ICplus is faster, but the standard fare is 15.50 euro each way. If you buy the ticket at least one day in advance, you may be able to get the discounted Amica fare of 12.60 euro each way.

Yeah, the trains are the best bet. Not only are they relatively cheap, by they are often full of friendly backpackers and families.

by train, no dubt, and it's better than the bus, trust me.. it will cost you not more than 30 euros return ticket http://www.trenitalia.com/trenitalia.html