Thank you everyone. It’s solved now.
I already have posts per page set up but I would like to add ‘newer posts’ and ‘older posts’ links to my blog.
Do you mean like this…?
<?php query_posts("posts_per_page=5"); ?>
<?php $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
query_posts('posts_per_page=5&paged=' . $paged);
?>
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<a class="posttitle" href="<?php the_permalink() ?>"><?php the_title(); ?></a>
<p><?php the_excerpt(); ?></p>
<?php endwhile; ?>
<?php posts_nav_link(); ?>
<?php else : ?>
<h2>Not Found</h2>
<?php endif; ?>
