ok, I have got my rail ticket from rome to florence thru trenitalia site (15% off). I have opt for "ticketless" option with "payment receipt via email". I have printed it out.
it's my 1st time using rail transport in europe. can anyone tell me the detailed procedure (like do i need to get a change into a boarding ticket or just walk up the train, do i need to validate the ticketless printout, etc) so that i can reach florence in a least chaotic way.