Hey, I am French, I spent 5 years there, cool place really.
Here's my advice :
For the map, buy a "Ponchet Plan-Net, Paris" it's the best and you will find it in any newsagent, inside you'll find maps of each one of the 20 "arrrondissements"(burroughs) of the city, map of busses, metro and suburban trains.
Some place to see:
The American Church in Paris ( http://www.acparis.org/ ) is a nice place to hang about, you'll find there the English version of Time-Out for Paris ( http://www.timeout.com/paris/ ) .
In the district you are going to stay you can go to : shakespeare & co ( http://www.shakespeareco.org/ ) also a place with lots of american and british expatriates, and just a few yards away is the legendary Harry's Bar ( http://www.worldsbestbars.com/city/paris/harrys-bar-paris.htm ).
You can find all your favorites magazines and newspapers at WH Smith ( http://www.whsmith.fr/ ).
Enjoy your stay !