What is best way to locate a website?

Search engines detect pages on the internet by sending out mini computer programes called "Spiders" that "crawl" the internet using links on peoples web pages to find other web pages. i.e. If a site was known by a search engine then the "spider" would go to its web address and check on the page for any links to other web pages, when it finds these links, it follows them and indexes the pages it finds and so on. There are many spiders crawling the web all day, every day from many different search engines, all sending back information to the mother ship about the web pages that they find.