I have had a look at your website and can see that you are using the classic theme. In this theme the 'Filed under:' section you will find in your index.php file, if you remove the code I have pasted below this will get rid of that information.
<div class="meta"><?php _e("Filed under:"); ?> <?php the_category(',') ?> — <?php the_tags(__('Tags: '), ', ', ' — '); ?> <?php the_author() ?> @ <?php the_time() ?> <?php edit_post_link(__('Edit This')); ?></div>
The "Comments (0)" section is again in your index.php file, if you locate the code I have posted below and remove it this will get rid of the comments for you.
<?php wp_link_pages(); ?>
<?php comments_popup_link(__('Comments (0)'), __('Comments (1)'), __('Comments (%)')); ?>