Follow the below easy crack steps for word press to show a selected category on index page
Open the Theme and open index.php
and insert the below link where cat is your category id.
<?php $posts=query_posts($query_string . ‘&cat=8’); ?>
<?php if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>
and this blog.theunical.com is the example of how it looks.
And You check how good the pagination is working too. Only Featured Category are listed in this site main page.
The other steps I see in many sites are waste of time and so complicated, and after doing everything the pagination will not work as to be.
But this step will work 100%