This document contains 23 tips for search engine optimization (SEO). The tips include including title, meta and description tags; keeping keyword density below 5-8%; using keywords in the domain name and content; researching keyword variations; building quality backlinks; adding credible outbound links; designing with SEO in mind; using SEO tools; avoiding unethical techniques; adding new content regularly in a search engine readable format; ensuring easy navigation; and building a network of quality backlinks.