Please move this to the correct place, but I'm starting out here since there were questions about metro zones and tickets in Paris. The metro/rer/bus site is www.ratp.fr They have an English button, but much of what is in French is not available in English. You can get metro and rer maps, zones, prices for tickets, carnet (books of tickets) and travel passes. You can also figure out routes and times with the travel planner. Consider using the bus, too, since you'll actually get a view of Paris that way, and the buses are easy to use. A Paris Visite, sold to tourists, costs 9.30 for zones 1-3 for a day. Two days 15.20. Three days 20.70 Five days 29.90 The Paris Visite has some discounts attached to it. Info available online in English. It might be worth it to pay the three extra euro if you'll use the discounts. Also, at the five day rate, it's cheaper than five Mobilis tickets. There is a less expensive option not advertised to tourists called a Mobilis, which is a one-day unlimited ticket. You can buy it from machines at most stations. The machines have an English option. The Mobilis is sold by zones, with zones one and two good for most tourists. 6.30, 8.40, 10.40, 14.00, depending on the zones you need. I tried to use a five zone Mobilis from CDG airport, but it is not valid to/from the airports. You'll have to buy a separate ticket at the airport. Mobilis is good for metro, bus, and rer. The ticket looks like a normal ticket, but works for unlimited voyages in the zones you choose. A tip about using your credit card in France, if you can get a credit card with a microchip on it, you will do better. Many places w/o attendants (like ticket machines, unattended gas stations) will not accept the magnetic strip version. A few will, but more will not.