Blue Mania is a 2 column theme converted to blogger by TeknoMobi, and originally designed by SkinPress.
Blue Mania is a pleasant theme comprising shades of blue and a simple layout. Right at the top is the navigation bar with the drop down menu, so you can also add sub-categories to it. To access it, go to Edit Html and look for the following code and add the relevant links. Test 1 is the sub-category, so you can add the page url and title there.
<div id='mainmenu'>
<ul>
<li class='first current_page_item'><a alt='home' expr:href='data:blog.homepageUrl' title='Home'>Home</a></li>
<li class='page_item page-item-2'><a href='#' title='About'>About</a>
<ul>
<li class='page_item page-item-36'><a href='#' title='test1'>Test1</a></li>
The search box is also included in the menu bar on the extreme right. The blog title comes below the menu bar, followed by the featured post section, that facilitates you to add a short summary and a 125x125 image of your top posts. The RSS subscribe option is also included next to the featured section.

You can access it from Edit Html, search for the below code and make the necessary changes -

<div id='board'>
<div id='board_left'>
<div id='board_items'>
<div id='board_body'>
<h2>Featured Posts</h2>
<div id='board_carusel'>
<div class='belt'>
<div class='board_item'>
<!-- board_item -->
<p><img alt='IMG ALT' src='IMAGE URL'/><strong><a href='POST URL'>Post title</a></strong> SUMMARY....</p>
<p class='more'><a href='POST URL'>Readmore</a></p>

While in the main column author, labels, date stamp and comments appear below the headline, and the number of comments come in a small bubble box. The template is integrated with the expandable post or Read More feature. While the sidebar has space dedicated to ads and sponsors, 125x125 ads can be used. Below that you can add blogger gadgets of your choice.

Download the Blue Mania Blogger Template