This document provides an overview of basic SEO (search engine optimization). It discusses what SEO is, why it's important, and some key ranking factors including content, technical elements, and link building. SEO is the process of getting organic or "free" traffic from search engines through things like optimizing titles, meta descriptions, internal linking structure, and social sharing to increase rankings and website visibility. The document includes references and mentions using tools like Moz and Google to help optimize a website for search engines.