Then you first want to create a Page Template, then on that page you want to display posts. See the Page of Posts example in the Pages article.
Here’s one possible solution (using WordPress Default theme):
<?php
/*
Template Name: PageOfPosts
*/
get_header(); ?>
<div id="content" class="narrowcolumn">
<?php
$showposts = -1; // -1 shows all posts
$do_not_show_stickies = 1; // 0 to show stickies
$args=array(
'showposts' => $showposts,
'caller_get_posts' => $do_not_show_stickies
);
$my_query = new WP_Query($args);
?>
<?php if( $my_query->have_posts() ) : ?>
<?php while ($my_query->have_posts()) : $my_query->the_post(); ?>
<?php
//necessary to show the tags
global $wp_query;
$wp_query->in_the_loop = true;
if ($post->post_date != $post->post_modified) {
?>
<div <?php post_class() ?> id="post-<?php the_ID(); ?>">
<h2><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a></h2>
<small><?php the_time('F jS, Y') ?> <!-- by <?php the_author() ?> --></small>
<div class="entry">
<?php the_content('Read the rest of this entry ?'); ?>
</div>
<p class="postmetadata"><?php the_tags('Tags: ', ', ', '<br />'); ?> Posted in <?php the_category(', ') ?> | <?php edit_post_link('Edit', '', ' | '); ?> <?php comments_popup_link('No Comments ?', '1 Comment ?', '% Comments ?'); ?></p>
</div>
<?php
} // if ($post->post_date
?>
<?php endwhile; ?>
<?php else : ?>
<h2 class="center">Not Found</h2>
<p class="center">Sorry, but you are looking for something that isn't here.</p>
<?php get_search_form(); ?>
<?php endif; ?>
</div>
<?php get_sidebar(); ?>
<?php get_footer(); ?>
Note this is the key test if a post is modified or not:
if ($post->post_date != $post->post_modified) {