Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
The Law also provides the territories of self-government and autonomy according to the traditional organization of the tribes, yet this is hardly applied. According to the Law all non-indigenous residents with properties in the areas acquired before the promulgation of the Law should be relocated and/or indemnified, and all posterior acquisition of lands is illegal and should be expropriated with no compensation, but this hasn't been endorsed by Costa Rica's government. Tension between indigenous and white residents of the areas of Salitre and Cabagra has become violent to the point of mutual aggressions.
Territories
Currently there are 24 officially recognized indigenous territories:
^ Schliemann, Christian (2012). "La autonomía de los pueblos indígenas de Costa Rica una contrastación del estándar internacional con la legislación nacional y su implementación". Revista Latinoamericana de Derechos Humanos (in Spanish). 23 (I): 23 145. ISSN1659-4304.