Acadians are the descendants of the French who settled in Acadia during the 17th and 18th centuries. Acadia was located in what is now Eastern Canada's Maritime provinces (Nova Scotia, New Brunswick, and Prince Edward Island), as well as parts of Quebec, and present-day Maine to the Kennebec River. Acadia, a distinctly separate colony of New France, was ethnically, geographically and administratively different from the other French colonies and the French colony of Canada (modern-day Quebec). As a result, the Acadians developed a distinct history and culture. The settlers whose descendants became Acadians primarily came from the southwestern region of France, such as the rural areas of Poitou-Charentes and Aquitaine.
Below are some interesting links to help with your Acadian research.
Genealogy of Acadian Families
Book by Gaudet, Placide, 1850-1930
The number one source for Acadian genealogy information.
Primarily Nova Scotia