I have a girlfriend from high school (in NY) who has lived in Costa for about 10 years now. Last time I spoke with her she had set up a business to help people interested in moving there navigate local rules, traditions and just make the transition easy all round.
If you are serious, feel free to hit me up on ICQ and I'll give you her email. Great person who would be happy to answer any of your questions
Have a great weekend,
Amy