What Is SEO?
SEO stands for Search Engine Optimization. It is the process of following the guidelines of the search engines (like Google, Bing, Yahoo) for improving the visibility of a specific website or a web page in the organic (earned, natural, unpaid,) SERP (Search Engine Result Page) through qualitative and quantitative traffic. The more visibility of the website in search engines brings the more users to that particular website and that user can also be converted into customers.
More than 94% people come towards a website through search engines top ten results.
Video Explained by Matt cutts
Here are the following chapters explaining all about What is SEO and some advanced SEO techniques and methods to self-improve your website.
Part 9: Violations And Search Engine Penalties