www.actv.it/en – This is the site for the water buses. The vaporetto (the larger ones that run up and down the Grand Canal) or a motoscafo, the smaller ones that we use at the Fondamenta.
www.alilaguna.it – the official site for the airport water buses to the city.
www.veniceconnected.com – the official Venice website. It is a fountain of useful information and you can buy a pass to cover the water buses and some churches and museums.
www.hellovenezia.com – information, tickets purchased and also has fares and timetables of the water buses.
www.venice-museum.com – you can book tickets for museums through this site.
www.churchesofvenice.com – the name gives a clue!