A search engine's main goal is to deliver the most relevant content to its users. Search engines "crawl" a website, determine its content and, based on more than 200 factors according to Google, they assign a page rank and order of relevance to your content. The biggest SEO tips are not just to optimize your website with proper keywords and place some Google Ads, but consistently add fresh, high quality content. If content is not fresh and meaningful, visitors will not stay long on your site. The amount of fresh content, the amount of traffic your site has, along with how long visitors stay engaged on your site, and whether they recommend it to others - all of these are factors in SEO ranking. Think of SEO ranking as a "popularity" contest and the best content wins.