Look on line, there are numerous companies that will have a guide who will pick you up at your hotel in Paris and take you on a day tour of Normandy. My wife and I did this and had a great time. To give you an idea of the day, the guide was French (very knowledgeable) and drove our group of 6 people in a van. He was also a great resource for things to see and do in Paris, restaurants, etc.