This document provides an overview of search engine optimization (SEO) best practices. It discusses how search engines work, including crawling, indexing, and ranking factors like PageRank. It also covers building accessible sites through link architecture, canonicalization, and search-friendly URLs. Additional sections explain keyword research, link building strategies, and how social media can help influence search through engaged influencers and shareable content. The goal is to help SEOs understand ranking algorithms and apply effective on-page and off-page optimization techniques.