How can I get from Malpensa airport in Milan to Viareggio?
Enter Malpensa Aeroporto and Viareggio and the 'hour' e.g. '13' for 13.00 on http://www.fsitaliane.it/homepage_en.html
The best connections have one change at Milano Centrale, but others may require an addition change, e.g. at Genova Piazza Principe. To understand the abbreviations and connection times for any departure time, select the train using the button in the right hand column then click 'details by selection'.
Ignore options going via MI N CA - Milano Cadorna. These have an entirely unnecessary change onto the Metro between stations in Milan.
When arriving by air, it is best to buy your tickets on arrival in Malpensa Aeroporto train station, as a delayed flight could make advance purchase tickets worthless.