The amazing art in Florence is easy to appreciate whether or not you have any knowledge of art history, but it is well worth taking a class while you are there.
Churches in Florence are definitely not exclusively for the religious, they are full of art, and as long as you do not interrupt a Mass you'll be welcome to look around.
Soccer is the sport of Italy and Italians take their soccer incredibly seriously and are deeply passionate about their teams.
The six most popular teams and their nicknames according to their team colors are: Napoli (Gli Azzurri), Roma (I Giallorossi), Juventus (I Bianconeri), Internazionale Milano (I Nerazzurri), Milan (I Rossoneri), and Fiorentina (i Viola). These are the top teams that are almost always in Serie A. At the end of each season, the three teams with the lowest number of points are relegated to Serie B, while their positions are then replaced by the the top three Serie B teams.