The document discusses Creative Commons licenses, which are a group of licenses developed to protect authorized uses of creative works, especially for artistic, online, and educational materials. It notes that the rise of the internet has led to direct access to millions of resources for non-commercial uses, forcing legislation to advance in protecting author rights while allowing some flexibility in material use. It describes different types of Creative Commons licenses and provides guidelines for referencing online materials from various sources like articles, blogs, videos, podcasts and more.