If you have no satellite Navigation system like Tom Tom etc we would very much recommend you use this link = ViaMichellin
Michellin Map and Route planner is excellent if only to show the cost of the toll charges
Or choose a secondary road where there are no road charges but it will take longer as it will be the scenic route and of course its not so easy to avoid major Towns.And of course it will warn you when to expect the speed cameras!
There is no need to register just enter details and print.
As you see in these examples simply place the post code or name of your start place be it in the UK or from a Ferry Port point or airport (where you will have hired a car) in France.
Place your holiday home (fingers crossed its Gone Fishin') for example I have put Gone Fishin's post code in which is 47190.
Place the criteria's of your type of car etc in the boxes provided . Click search and you will come up with the toll charges, map and itinerary of what is the best route Michelin recommends or simply force the search to stop off or recalculate your preferred route.

Via The Michelin Route Planner Itinerary it will take you step by step to your holiday home at Gone Fishin