WordPress Pagination Setup Guide (+ Troubleshooting)

<?php if ( have_posts() ) : ?>
<!-- Add the pagination functions here. →
posts_nav_link()
<!-- Start of the main loop. -->
<?php while ( have_posts() ) : the_post();  ?>
<!-- the rest of your theme's main loop -->
<?php endwhile; ?>
<!-- End of the main loop -->
<!-- Or add the pagination functions here. -->
<div class="nav-previous alignleft"><?php previous_posts_link( 'Older posts' ); ?></div>
<div class="nav-next alignright"><?php next_posts_link( 'Newer posts' ); ?></div>
<?php else : ?>
<p><?php _e('Sorry, no posts matched your criteria.'); ?></p>
<?php endif; ?>