Prep: Italian Culture & Etiquette [Prepare for Culture Shock]

The world was my oyster but I used the wrong fork. - Oscar Wilde
Let's start with some cultural etiquette from Italy. Here's some interesting ones:

When being introduced and shaking hands, women generally extend their hand first to men
Maintain eye contact while talking
Friends usually greet each other with a kiss on both cheeks

Source: eDiplomat

The following 3 topics seem to be the most specific to Italian culture.

Italian Style

Italians value appearance and the way you dress.
How you dress indicates your social status, your family's background, and your education level. 
A highly valued concept is called "bella figura", which means good image.
Bella figura refers not only to dressing well, but the aura being projected: confidence, style, and demeanor.
First impressions are made immediately, drawn from fashion and appearance.

Gift Giving

An emphasis on quality rather than quantity is best for gifts, especially wine.
Do not wrap gifts in black (it represents mourning) or purple (bad luck).
Gifts are usually opened when received.

Dining Etiquette

Never keep your hands in your lap during the meal.
Pick up cheese with your knife rather than your fingers.
If you do not want more wine, leave your wine glass nearly full.
Ask for your check when finished eating - it may not be brought until you ask for it.