So I found one question that I read that asked how to have a custom CSS file per page. Here's an easy way to add custom CSS files based on simple conditional logic in Genesis.

[php]
remove_action('genesis_meta', 'genesis_load_stylesheet'); //removes current stylesheet
add_action('genesis_meta','genesis_custom_css');
//get_bloginfo('stylesheet_url') is our normal style.css
function genesis_custom_css() {
if (is_category())
echo '<link rel="stylesheet" href="'.CHILD_DIR.'/css/cat_style.css" type="text/css" media="screen" />'."n";
if (is_home() || is_front_page())
echo '<link rel="stylesheet" href="'.get_bloginfo('stylesheet_url').'" type="text/css" media="screen" />'."n";
if (is_archive())
echo '<link rel="stylesheet" href="'.CHILD_DIR.'/css/arch_style.css" type="text/css" media="screen" />'."n";
if (is_author())
echo '<link rel="stylesheet" href="'.CHILD_DIR.'/css/auth_style.css" type="text/css" media="screen" />'."n";
if (is_page()) //also can take $pages=array(1,2,3); adding and elseif or else at the end.
echo '<link rel="stylesheet" href="'.CHILD_DIR.'/css/page_style.css" type="text/css" media="screen" />'."n";
if (is_404())
echo '<link rel="stylesheet" href="'.CHILD_DIR.'/css/page_style.css" type="text/css" media="screen" />'."n";
}
[/php]

When I was checking out Expose Child Theme at StudioPress, I was slightly disappointed that when I clicked on a category that it didn't resemble the homepage in any way. Personally, I would love to see an option in Theme Settings that asked whether I wanted to have my category archive pages to reflect the homepage or a normal category archive page as they have now. While I have taken the home template and dubbed it into a category template, more things can easily be added. If you want to download the file: [download id="3"].

In order to widgetize the Expose Child Theme, you have to do three things.

1. Edit the CSS to make .portfolio-posts absolute. So find the following CSS.

[html]#content .portfolio-posts, {
background: #FFFFFF;
float: left;
width: 280px;
min-height: 280px;
margin: 0 10px 10px 10px;
padding: 9px 9px 9px 9px;
border: 1px solid #D5D5D5;
display: inline;
-moz-box-shadow: 0 0 3px #BBBBBB;
-webkit-box-shadow: 0 0 3px #BBBBBB;
overflow: hidden;
}

#content .portfolio-posts h2 {
font-size: 18px;
}

#content .portfolio-posts p {
line-height: 20px;
}[/html]

and delete #content.

2. Edit functions.php to include the widgeted area. Add the following code after // Register widget areas:
[php]genesis_register_sidebar(array(
'name'=>'Home 1',
'id' => 'home-1',
'description' => 'This is the first section of the homepage.',
'before_title'=>'<h3 class="widgettitle">','after_title'=>'</h3>'
));
genesis_register_sidebar(array(
'name'=>'Home 2',
'id' => 'home-2',
'description' => 'This is the first section of the homepage.',
'before_title'=>'<h3 class="widgettitle">','after_title'=>'</h3>'
));
genesis_register_sidebar(array(
'name'=>'Home 3',
'id' => 'home-3',
'description' => 'This is the first section of the homepage.',
'before_title'=>'<h3 class="widgettitle">','after_title'=>'</h3>'
));[/php]

3. Edit home.php to incorporate the widget. Then comment out the following:
[php]//require_once(PARENT_DIR . '/index.php');[/php]

And add the following just after that:
[php]get_header();
genesis_home(); ?>

<div id="content home-widgeted">
<div class="widgeted-home home-1">
<?php if (!dynamic_sidebar('Home 1')) : ?>
<div class="widget">
<h4><?php _e("Home", 'genesis'); ?></h4>
<p><?php _e("This is a widgeted area which is called Home.", 'genesis'); ?></p>
</div>
<?php endif; ?>
</div><!-- end .widgeted-home home-1-->
<div class="widgeted-home home-2">
<?php if (!dynamic_sidebar('Home 2')) : ?>
<div class="widget">
<h4><?php _e("Home", 'genesis'); ?></h4>
<p><?php _e("This is a widgeted area which is called Home.", 'genesis'); ?></p>
</div>
<?php endif; ?>
</div><!-- end .widgeted-home home-2-->
<div class="widgeted-home home-3">
<?php if (!dynamic_sidebar('Home 3')) : ?>
<div class="widget">
<h4><?php _e("Home", 'genesis'); ?></h4>
<p><?php _e("This is a widgeted area which is called Home.", 'genesis'); ?></p>
</div>
<?php endif; ?>
</div><!-- end .widgeted-home home-3-->
</div><!-- end #home-widgeted -->

<?php get_footer(); ?>[/php]

Now, Expose Home Page is widget ready to give more control on the front page. You may need to add some CSS to style even further.

To add ads at the bottom of the posts, you can add ad content space. A good way would be to widgetize it and use Widget Logic to control what ad appears on what page, etc.

So, add this to your functions.php file.
[php]genesis_register_sidebar(array(
'name'=>'Ad Content',
'description' => 'Place widgets here to fill the ad content area that appears after posts.',
));
function add_ad_content() { ?>
<div class="ad_content">
<?php if (!dynamic_sidebar('Ad Content')) : ?>
<h3><?php _e("Ad Content Area", 'genesis'); ?></h3>
<p><?php _e("This is a widgeted area designed to hold ad content.", 'genesis'); ?></p>
<?php endif; ?>
</div><!-- end .homepage_content -->
<?php }
add_action ('genesis_after_post_content','add_ad_content');[/php]