how to do searches
i'm completely new on search engines, How do they work
They take in a few keywords that you type in and try and return a list of websites that most match the content it thinks you are searching for. Because the internet is such a large entity and people make new sites everyday, it's impossible to know all the addresses of all the sites. So the search engines come in and help you out.
This article has a better explanation than what I can give though: http://computer.howstuffworks.com/search-engine.htm