Hi,
I prefer this in order to link thumb to post.
Go to home.php and change this line:
<a href="<?php echo $large[0] ?>" title="<?php the_title(); ?>" data-rel="prettyPhoto" class="zoom">View Image</a>
Into:
<a href="<?php the_permalink() ?>"<?php echo $large[0] ?> title="<?php the_title(); ?>" </a>