User:Pacheau
Coming from airport
Roissy CDG
The best option is to take the RER B (9.75 €), then you can take the metro with the same ticket.
There is a cheapest way but not worth it, take the bus that cost 3 tickets and take 1 h 20, then you have to pay a new ticket to take the metro.
Orly ORY
Take tram 7 with one ticket, then take metro 7 with another ticket (then any metro).
Beauvais BVA
The usual solution is the 17 € bus http://www.aeroportbeauvais.com/bus.php?lang=eng.
You can try to find a car-sharing on http://blablacar.com around 7-8 €
Or even hitchhiking if the weather is good and you have some time, there is an easy spot almost everybody pass by. If it fails there is always the bus (check the time).
You can't sleep at Beauvais airport.
Moving in Paris
While you're at the airport, ask for a free Paris map.
If you have a smartphone, install an offline map app like maps.me, then download Paris/Île-de-France map.
Metro
http://ratp.fr is the official website
(Prices may change regularly, usually once a year)
Metro and RER inside Paris is always the same price, 1 ticket. You can use the same ticket changing metro and RER.
Tramway and bus also. You can use the same ticket changing tram and bus.
But you can't use the same ticket changing metro and bus or tram.
1 metro ticket is 1.80 €
10 metro tickets cost 14.10 €
On saturday, sunday and public holidays, people under 26 can buy a day ticket (zone 1-3) for 3.85 €
RER outside Paris depends on the zone you go. Versailles is the main touristic thing to see outside of Paris.
Bicycle
Velib is cheap, you need a credit card, don't ride it more than 30 min, make a break (minimum 2 min) then take it again.
Safety
The most annoying are the young gipsy girls pretending to be deaf, they show you a paper they want you to sign and scam some money, and pickpocket you at the same time.
In Montmartre, black guys try to lace a string around your wrist and then ask for payment, just walk away.
In metro, touristic places including museums, pickpockets can operate. Don't display your expensive smartphone. Hold it with two hands. Don't stay near a door.
