In the default wordpress theme, the links to previous and next posts display at the top of the post page, you may want to change their positions to be at the bottom after the comment window, just do the following.
1. from your control panel go to “Presentation”.
2. Open “Theme Editor”.
3. At the left, open “Single Post” code.
4. Find this code and remove it.
<div class=”navigation”>
<div class=”alignleft”><?php previous_post_link(’« %link’) ?></div>
<div class=”alignright”><?php next_post_link(’%link »’) ?></div>
</div>
5. Find this code:
</div>
<?php get_sidebar(); ?>
and right above it add this code:
<br><br><div class=”navigation”>
<div class=”alignleft”><?php previous_post_link(’« %link’) ?></div>
<div class=”alignright”><?php next_post_link(’%link »’) ?></div>
</div>
6. Update File and check changes.