Very convenient location to travel through Tuscany and any where in Italy. The station is quite big and nice. The ticket both staff is no good with English language and won't be much help but there are machines across the station and has English language option and is very easy to use. I planned all my trips through those machines. The only thing to remember would be have the Italian names of all the stations you are travelling, even under the English version the names of the stations are in Italian.
There are two coffee shop at the station and there are some friendly staff sitting in the booth in the middle of the station to guide you where you want to go. Just show them the ticket and they will move you in the right direction. There is a quite good big shopping center underground linked to the station so do check it out.
As soon as you are ready to board make sure to please validate your tickets as they do check once you are on board the train. You can leave your luggage at the station for a few Euro if you have to check out.