The main language in France is French. Though, as in most European countries, many people here have a great understanding of English, as well. This is quite common for university students, and it is in fact a requirement for master's students to have an intermediate level of French to be accepted into their program.
Arabic is another common language, as Marseille is a port city welcoming many people from the Middle East and North Africa.
Euros are the currency of France. This is a rather recent change, as their prior currency, francs, were used until the early 2000s. The pictures on the back of the coins vary according to the country they are minted in, but the front remains the same across all euro coins. Paper bills start at five euros (€5) and are currently minted up to 200 euros (€200). Currently, US dollars are worth less than the Euro, meaning one euro is equal to roughly $1.18.
Aix-en-Provence is known for being a more expensive city, with a bottle of water running you €1.50 to €2.50, depending on where you get it. Most people drink tap water here, as it is clean and bountifully available.
