Google how to work:
This chapter explains those elements of the Google ranking process that will matter most to you.
It is not meant however to be an exhaustive inside look of how Google work- Only a handful of persons at Google know this.
Google, like other search engines, uses automated software to read, analyze, compare, and rank your web pages. so you need to know what elements and factors Google cares about, and how important these factors are in relation to each other.
Because this is an important concept it will be repeated: Google uses automated software to analyze your website- not human beings. which means that visual elements of your website that may matter to you- like layout, color, animation, Flash, and other graphics are ignored by Google.
The Google search engine is like a blind person reading a book in Braille - anything that is graphical, spatial, or visual in nature is simply not seen.
As such, you need to start thinking like the Google search engine
So What is a ranking?
As stated previously, a ranking on a search engine is a web page's listing and relative placement on a results page (also known as a SERP) for a certain search query .
As and example, if you type "house plans" into the search box at Google, you will get those listing displayed (10 listings per page by default) that Google deems most relevant to the search phrase house plans, sorted in order of relative importance.