Many people think that the auto-entrepreneur scheme will suit them because they can register themselves on the internet and they don't have to pay if they don't earn anything.
However, this régime was thought up mainly to help those people already employed to start up a second occupation without causing themselves a huge amount of paperwork. It was never intended to be an easy answer to issues of unemployment nor a backdoor into the French welfare and healthcare systems.
Consequently it may not be appropriate for you to register yourself under this scheme and you may land yourself with unforeseen and expensive problems.
What are your aims in registering a business? Do you need healthcare and a right to stay in France? Do you need an income? Do you need post-brevet education for your kids?