There are two different places to search from when you open up a web browser; there is the address bar and the search bar.
The address bar is at the very top of the page and can be used if you know the exact address of the site you want to go to. To use it, type the address of the site, using the http:// is not necessary. The address bar must be used to search for a site if the site has not yet been indexed. This is the address bar:
The search bar is used when you either don't know the exact address of a site you are looking for, or when you would like to find multiple sites on a single topic. When you use the search box you will be given a list of websites that the search engine feels best meets the criteria of your search. This is the search box:
For more information on getting your site indexed with Google please take a look at our SEO tutorial: Promoting Your Site.