When you bought the car, did you get a drivers hand book with it, if so, have a look through it and it will tell you how to change the fuse and lots of other useful information. If it didn't have a drivers hand book buy a Haynes manual. Mind you, with it being a Renault, it may not be a just fuse that has blown causing the problem. I don't know if you are aware, but Renaults are a nightmare for electrical problems
DB
February 2012