If you want to know something about these people and enjoy them somewhat, before buying the map of the city you should buy the sonnets of Gioacchino Belli, the true guide of Rome. It's easy reading, educational and fun. Dante should be read to understand Florence and the Florentines; Belli, to understand Rome and the Romans. The first one never makes you laugh, the second makes you laugh all the time. And then get to know the inns.
Aldo Palazzeschi