We can talk all day about SEO however here is just the basics of it. All major search engines such as Google, Bing and Yahoo have primary search results, where web pages and other content such as videos or local listings are shown and ranked based on what the search engine considers most relevant to users.
In other words, SEO involves making certain changes to your website design and content that make your site more attractive to a search engine. You do this in hopes that the search engine will display your website as a top result on the search engine results page.
Though search engine optimization can get quite complex when it comes to all the different factors that impact your ranking, the basic process is not as difficult to understand.