You can access Smart Hub on your Smart TV by selecting the 'Menu/123' button on your remote. From there, click 'Menu' in the upper left-hand corner on the screen. Next, select 'Smart Hub,' 'Samsung Account,' and 'Sign in.' Enter your email address and password and click on 'Sign in' again. Once you've signed in, you can choose an image to differentiate your account from others. After all is complete, select 'Done.'