This document provides an overview of search engine optimization (SEO). It discusses what SEO is, why search engines are important, and how search engines work by employing crawler programs to index websites. It also outlines the on-page and off-page SEO processes, including technical elements like titles, meta tags, URLs and linking, as well as white hat versus black hat techniques. Practical tips are provided for online success, including identifying audiences, competitors and keywords, building content and links, and monitoring results. Google tools like Webmaster Tools and Analytics are also mentioned.