To rename the module titles that are displayed on your home page such as Special Offers or Featured Products, navigate to /catalog/language/english/module/ and edit the relevant *.php file.
Example One. edit featured.php
and change Featured Products.
<?php // Heading $_['heading_title'] = 'Featured Products';
To whatever you like, such as Most Popular Products.
<?php // Heading $_['heading_title'] = 'Most Popular Products';
Save, and re-upload the file