//Clean way to go Home
<a href="<?php echo site_url(); ?>">Home</a>
//Other pages etc
<a href="<?php echo site_url('/about-us'); ?>">About Us</a>//Clean way to go Home
<a href="<?php echo site_url(); ?>">Home</a>
//Other pages etc
<a href="<?php echo site_url('/about-us'); ?>">About Us</a>