Paris is well equipped in public transports. With one single metro ticket you can go anywhere within Paris city limits. That goes for Metro and RER. According to the length of your stay you better buy a pass called "Navigo" valid for a week or a month which gives you access to different concentrical sections from.
How to get there
Charles de Gaulle, George V, Franklin Roosevelt, Champs Elysees Clemenceau
RER A :
Charles de Gaulle Etoile
from the 2016-01-07 until the 2106-02-17
Paris Winter sales !Shop til you drop !
During six weeks, Paris is the place for winter sales. In the department stores of the Champs Elysees, in the boutiques Golden Triangle, in the luxury boutiques of Avenue Montaigne take advantage of the winter sales !
Around town and specificaly around the Champs Elysees