Various Styles Per Recent Posts?

My theme currently shows the newest article, which I can style specifically and then the remaining articles for however many are set will show, styled according to one other governing style.

How do I add a third or fourth and is there a way to limit the number per posts that are styled to whichever assigned style?

Here is my code:

<?php if (have_posts()) : ?><?php $count = 0; ?><?php while (have_posts()) : the_post(); ?><?php $count++; ?><?php if ($count == 1) : ?>

<div class='first'>

<div id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
<?php wp_link_pages( array( 'before' => '<p class="page-link">' . __( 'Pages:' ), 'after' => '</p>' ) ); ?>
</div><!--post-->

<div class='thumbnail'>

</div><!-- thumbnail -->

</div><!-- first -->

<?php else : ?>

<div class='seconds'>

<div class='thumbnail'>

</div><!-- thumbnail -->

</div><!-- seconds -->

<?php endif; ?><?php endwhile; ?>

<?php if(function_exists('wp_paginate')) {wp_paginate();} ?>

<?php else : ?>
<div id="not-found"><b>Not Found</b><p>Sorry, but you are looking for something that is not here.</p></div>
<?php endif; ?>