What trains do I catch to travel from Sorrento to Rome, Florence? Do I go through Naples? Also, what are the stations I get off at the stops?
Circumvesuviana commuter train from Sorrento to Naples.
http://www.eavsrl.it/web/it/content/orario-integrato
Then high sped trains from Naples to wherever you want to go.
www.trenitalia.com
Station names:
Sorrento
Napoli Centrale
Roma Termini
Firenze Santa Maria Novella
Venezia Santa Lucia
San, Santo/a, are often abbreviated using S.
Centrale is often abbreviated with C. or with C.le
Sorrento is the end of the line. You get off at the Naples train station. If you are going from Naples to Sorrento, be sure you're on the Sorrento train, there's more than one line in Naples.