Go there, but before you do, learn how to conjugate verbs. After that its mostly vocabulary. One phrase to use a lot is "plus lentement s'il vous plais!". Once they slow down a bit you can get what they're saying. I was at a hostel rolling some cigarettes at a table with some others when someone sat down and said something really fast at me. I asked her to slow down so she repeated herself like you would to a retarded child. Now I understood she was asking for a smoke so I answered oui and got a laugh from the table. After that they just kept it slow for me and I made some good friends there.