This post will explain the proceedure to show posts only from specifc or multiple categories on your WordPress home page.
Enter the Admin section of your WordPress site then go to the Appearance => Editor =>.
From the right select home.php (if it exists) or index.php (if home.php does not exist).
You will want to add code directly above “The Loop”
<?php if(have_posts()) : while(have_posts()) : the_post(); ?>
I have found several ways to do this but only a few have worked for me. I will list them below.
I have found this to be the most reliable way of doing this. I have revised this post and removed the others.
<?php if (is_home()) {query_posts("cat=1");}?>
If you dont want to show posts from a specific category simply change the code to negative category
<?php if (is_home()) {query_posts("cat=-1");}?>
For more information on showing specific categories and even specific posts on the home page please check out the following link.
WordPress Query Posts
If you would like to show 2 or more categories and keep a specific category or post on top please see this link.
Word press multiple loops
Here is an example using multiple loops on your home page
Add
<?php $temp_query = $wp_query; ?><br>
<?php if (is_home()) {query_posts("cat=1");}?>
Above
<?php if (have_posts()) : ?>
Find the first
<?php endif; ?>
Then below it add
<?php $wp_query = $temp_query; ?>