What is search engine optimization, then? It's not secrets or tricks — just ranking methodologies to follow in order to help a site that offers value to users beat the competition in search results. Today, you must be committed not just to optimizing your domain, but also to making it a quality site that attracts links naturally and is worthy of ranking.
For example: If you sell household electronics and your paid ad promotes your selection of noise-cancelling headphones, your landing page should feature your noise-cancelling headphones. Directing people to your homepage instead, where they’ll need to sift through your product categories or do another search, will lead to frustration and a poor chance of getting the sale.
1. The big picture. Before you get started with individual tricks and tactics, take a step back and learn about the “big picture” of SEO. The goal of SEO is to optimize your site so that it ranks higher in searches relevant to your industry; there are many ways to do this, but almost everything boils down to improving your relevance and authority. Your relevance is a measure of how appropriate your content is for an incoming query (and can be tweaked with keyword selection and content creation), and your authority is a measure of how trustworthy Google views your site to be (which can be improved with inbound links, brand mentions, high-quality content, and solid UI metrics).
SEO techniques can be classified into two broad categories: techniques that search engine companies recommend as part of good design ("white hat"), and those techniques of which search engines do not approve ("black hat"). The search engines attempt to minimize the effect of the latter, among them spamdexing. Industry commentators have classified these methods, and the practitioners who employ them, as either white hat SEO, or black hat SEO. White hats tend to produce results that last a long time, whereas black hats anticipate that their sites may eventually be banned either temporarily or permanently once the search engines discover what they are doing.