I just realized that the theme I'm using for my blog doesn't have the "Older Posts" and "Newer Posts" links at the bottom of the page that allow people to get to the older posts that I created.
I was told that I needed to add the below code to my index.php file, which I did, but the links still aren't showing up.
<?php next_posts_link('Older Posts'); ?>
<?php previous_posts_link('Newer Posts'); ?>
Did I need to do more than just simply paste the above code in the bottom of my index.php file?