To enter Chile you need a valid passport and tourist visa.   Note:  legal requirements can sometimes be complex in Chile, particularly for non-Spanish speakers. Whenever you fill out any form in Chile, make sure you get a copy of what you have completed. In every case, be sure to take all legally-issued documents with you when applying for visas, permits or other official certificates.

Local currency is the Chilean Peso. As of this writing, the exchange was about 451 pesos per 1USD.