Travel from Rome to sorrento

Depends a little bit on what you mean by best way. I always prefer a driver and limo as the best but cannot afford that so will go with second or third best. There is a direct bus twice a day, I think, from Rome. The train is easy to use. Take a train to Naples and the Circumvesuviana to the last stop - Sorrento. The Circum... is basically a commuter train between Sorrento and Naples. Leaves from the lower level of the Naples train station.

thank you Frank.

The "best way" will depend on your budget. Use the high speed Freccia train from Roma Termini to Napoli Centrale, and from there transfer to the Circumvesuviana for the final leg to Sorrento.

As Frank mentioned, you could hire a car from Naples to Sorrento but for those on a more modest budget, travel by train is easy and inexpensive. The Circumvesuviana is not posh by any means, but will get you there. They have several lines, so be sure to board the one to Sorrento (it's the last stop on that line). Be sure to watch your luggage, as there may be pickpockets and scammers.

Correct, there is no direct train, so you make the connection in Naples as described above. There are also ferries between Naples and Sorrento, but those aren't any more convenient. If you'll travel with Rick's Italy or Rome book, then see also the Naples chapter.