Category ID

[GeminiFilly]

Total newbie to Revolution themes and love them. But will have to ask a couple of questions not able to sort out.

On the home page where it has the Featured 1 Featured area I figured out how to change those titles in the home.php file however I'm trying to figure out how to assign posts to those specific areas.

I have Healthy Living and Health News and the bottom is Health Articles.
I make a new post and it shows up in all three areas.

I made new categories to reflect those titles as well.

Is the ID showing in the url what I need to change in this bit of the home.php file to have posts go to those specific categories?

<?php $recent = new WP_Query("cat=1&showposts=3"); while($recent->have_posts()) : $recent->the_post();?>

The area I highlighted red? Is this where I change it to reflect the new categories I made so I can get posts to show in just one specific area?