Spanish is the official language of Guatemala and the most widely spoken language. More than twenty indigenous languages are still spoken throughout the country, but many Maya have at least a basic knowledge of Spanish, except in the most remote areas. For the Garifuna of Livingston, Garifuna and English are the main languages (but Spanish is also spoken).
The most familiar form of Spanish spoken between good friends is “tú” and “vos”, but it varies by region. It is considered rude and very informal when used with someone you don’t know. As a tourist, it is safer to stick with the “usted” form. However, don’t be surprised if some host families and language teachers immediately use the “tú” or “vos” form. If this is the case, you may respond in the same way.