I've heard nightmares about finding the right train if you don't speak Italian. We are flying into Rome next week and then going straight to Florence. Can anyone direct me to the right tracks. I know I have to take one train from the airport to the main station and then get on the fast train to Florence. I just don't want to screw up and wind up going the wrong direction. Also, can you buy tickets there and pay with a credit card. Thanks in advance for any guidance out there.