There are different options for travelling to Normandy including ferry, Eurotunnel and air. A car is essential but you can hire a car when you arrive in France. This in-depth article has details of how to get to Normandy, route planning and travel options once you arrive here. A link to driving in France is included in the article and this is particularly important as some rules differ depending on which department you are in. For example, the speed limit on departmental roads in La Manche department is 80km unless it’s indicated otherwise. However, in neighbouring Calvados the speed limit is 90km.
The rather strange rule about giving way to the right can be confusing and therefore dangerous. A white triangular sign with a red border and a black cross means that you need to give way to the right.
The French government travel page has information about travel to and from France due to the pandemic. You should also consult your own government website for the latest news.
Enjoy your journey and see you soon.