Search Engine Optimization (SEO) is the process of affecting the online visibility of a website or a web page in a search engine's results. There are three types of search results - "natural, "organic" and "earned"
Natural and Organic search results are virtually the same thing and same meaning. These are achieved by using the appropriate keywords, blog post, the correct meta tags and relevant content. Earned is simply paying for services like Google AdWords.
Keep in mind SEO takes time and there are no instant results, whether they are organic or paid for.
There are a lot of things and moving parts when it comes to SEO, if you are serious about where you rank I recommend hiring us to be your SEO go to source.