Hi,
Here are a few links which may help you whether you would like to settle or already live in Costa Rica.
Feel free to complete the list!
Costa Rica immigration services
http://www.migracion.go.cr/
Embassy of the United States in Costa Rica
http://costarica.usembassy.gov/
British embassy in Costa Rica
https://www.gov.uk/government/world/costa-rica
Cost of living in Costa Rica
www.numbeo.com/cost-of-living/
Doing business
Costa Rica Investment Promotion Agency
http://www.cinde.org/
Costa Rica Chambers of industries
http://www.cicr.com/
Costa Rica-American Chamber of commerce
http://www.amcham.co.cr/