Metro

First thing you need to do when you arrive in Paris is to work out how to use the metro, which is a fabulous way to get around. But get ready for the stairs! They seem to leave every few minutes and the underground stations are easy walking distance from just about everywhere you want to go. There are maps on the walls of the station and the ticket machines have English translations. The best thing to do for a stay of a few days is to buy a 'carnet' of 10 tickets or a single ticket you can use for the whole time. Make your life simpler by travelling outside the peak times (going to and from work) and be aware that on the weekends everyone and their dog (really!) uses the metro and it gets very up close and personal, something I haven't experienced since Tokyo. You can turn this to your advantage by making a beeline for someone cute looking and when I was there I saw quite a few model looking types, particularly near the groovy districts-Odeon, Bastille, etc.