Best way to travel from Fiumicino airport (Aeroporto Leonardo da Vinci) to central Rome?

By far the better way to reach the center of Rome from FCO is by train.Without leaving the Airport follow the info " Ai treni " to the trains , you will be redirected trough the Airport to an inside little station. Tickets will be around 20 $ one way more or less .The train will take you to the main station of Rome , ROMA TERMINI < ( Rome has more than one station so be sure to step down at Termini ) from there you can take the metro link ,buses or taxis to reach your final destination