The CC&Rs, or Declaration of Covenants, Conditions, and Restrictions, is a document recorded with the county and is a legally binding. This means that when you purchase a lot or a home in a HOA, you automatically become a member of the HOA. Basically, the CC&Rs are the rules of your neighborhood.
The CCR's is where you will find information about maintenance responsibility, architectural rulings, insurance requirements, violations and hearings, AND MORE.
The CCR's for the association can be found on the HOA website under Community Info/Documents.