Hello!
Here are some must follow rules for Italy:
– always order house wine
– order the espresso or cappuccino after the meal
– order the house desert
– search for restaurants and cafes further always from the city centre and where menus are in Italian
– try the weirdest thing on the menu
– get gelato from old tradition specific gelaterias
Obs:
– pizza is thin and saucy
– salty food
– you get freee bread and bread snakcs with every meal
– you pay for tap water
– food is cheaper in bigger cities and easy to find traditional ones