The Railway service is provided by Trenitalia; the railway connects Nettuno to Rome (Roma Termini) with the Regional Service.

Ticket office
Tickets for train, bus and Rome's public transport can be bought at the Ticket office in the Station (Piazza IX Settembre).

How to use tickets
There are three kind of tickets: Railway ticket, Atac ticket (for Rome), and Metrebus integrated ticket.

    You can use a Railway ticket only for Trenitalia train services. Every ticket has a number according to the distance (in km) they can be used for. For example, it takes a 60 km ticket to get Rome from Nettuno. Every Railway ticket is no return (so you have to buy two tickets for return).

    You also need Atac tickets to use the public transport of Rome. There are standard tickets (expiring in 70 minutes) and daily tickets (valid until the end of the day in which they are voided). There are weekly or three-days tickets, too.

    Metrebus tickets can be used for all kind of public transport according to the area they can be used for. Our Region Lazio is divided in five zone: from A (made up of the entire extension of the City of Rome), to E (which includes the cities at the edge of Lazio). In this way it is possible to move between one or more areas with a flexible fare system.
If you want to visit Rome departing from Nettuno, you need a three-areas Metrebus ticket (from A to C, which includes Nettuno). There are daily, weekly, monthly or yearly Metrebus tickets.

Things to keep in mind
    Please remember to void the tickets before departing. Don't void more than once a Metrebus tickets; due to per-person nature of Metrebus ticket, you must also write your name and your birth date on it.
    Plaining your trip can be useful to choose the tickets. If you want to reach Rome for a walk-thru journey, you can buy two Trenitalia tickets instead of one daily Metrebus ticket, saving money. But if you want to visit Rome and to move with the public transport many times in a day, it is better to use a Metrebus daily ticket.
    Because tourist places (such as some Rome's places) are crowded, please beware of pickpockets. Don't leave alone your things on buses, trains or subways, but is better to watch out for this risk everywhere.

Links
    Trenitalia: this is the official site of the Railway Service company. It has the latest timetables for all services, and it provides informations about tickets, stations and many others things.

    Atac/Metrebus (alternative link): official site of Rome's public transport service. It contains every information about the service.

    Cotral: the official site of the Regional company of bus transports.