Ventureno Chumash is native Californian language that was researched extensively by John Peabody Harrington and others in the 19th and 20th centuries. While materials on this language are in theory, plentiful, actual data on the language is not accessible to the average person. This is a two-part work that consists of a part on the theory behind grammar writing and then a part that will be a detailed pedagogical (teaching) grammar of Ventureno Chumash. The teaching theories, approaches, and methodologies adopted/used in this grammar form the basis for closing the gap between one's understanding of English and one's understanding of Ventureno, with the goal that a person will be able to access original Ventureno texts and other material on the language.