ROME: USEFUL INFORMATION
What to see arranged by area of the city is at the very front of the Rome Rough Guide.
Transportation
The airport is connected to the center of Rome by a direct train, the Leonardo Express, which takes 32 minutes to get to Termini station. It runs every 15-30 minutes.
A train runs at 5 and 35 past each hour from 5:35 am to 10:35 pm from platforms 23 and 24 to the Airport.
The ticket office at Termini is on the first concourse. There are also ticket machines dotted around the stataion.
Keep public transport for longer hops, down to Testaccio, for example.
Useful Websites
ROMA:
Soprintendenza Speciale Per I Beni Archeologici Di Roma: A government site that offers much information about historic monuments.