To login to Gmail account, go to mail.Google.com, where you are taken to the simple interface of Gmail. Now to sign in to the account type your username under Username, type your password under Password and then click on Sign in button on the Gmail home page. This will take you to the Gmail account page, where you can access all your Gmail stuff. Be sure that you have entered correct username and password to avoid errors while getting in to your account. If you forgot your username or password then you can retrieve your username and password by clicking on can’t access account.