Once you have a Google account, you can tell Google who you are by signing in to the account. You will find a “Sign In” box at the top right hand corner of many Google screens. You can also sign in from the home page of services like Gmail and Groups, as well as from the Accounts page. When you are done with your Google account, you can also close your browser. If have checked the Remember me on this computer box, Google will set a cookie in your computer so that, the next time you open your browser and go to the Google page, Google’s server will sign you in automatically.