Configure Featured Video Slider:
-------------------------------
Login to blogger. Go to Template --> Edit HTML. Now scroll down to where you see the codes below:

<ul class='slides'>
 <li class='item'>
 <p><iframe frameborder='0' height='315' src='http://www.youtube.com/embed/Ok2VamxrYAY' width='560'/></p>
 </li>
 ..........
<ul class='thumbs pagination'>
 <li><span class='youtube-temp'/>
 <span class='hover-bg'/>
 <a class='title' href='#' rel='0'>Lorem ipsum dolor sit amet</a>
 <a class='link' href='#'/>
 </li>
 ..........

Replace:
"#" with your featured video URL.
"http://www.youtube.com/embed/Ok2VamxrYAY" with your youtube video URL.

Configure Dropdown Menu:
-----------------------
Login to blogger. Go to Template --> Edit HTML. Now scroll down to where you see the codes below:

<nav class='primary'>
<ul class='sf-menu' id='topnav'>
 <li><a href='#'><span class='right'>Home</span></a></li>
 <li><a href='#'><span class='right'>Portfolio</span></a>
<ul class='sub-menu'>
 <li><a href='#'><span class='right'>Portfolio 1 col</span></a></li>
 ..........

Replace "#" with your menu item URL.

468x60 header banner ad
-----------------------
Go to Template --> Edit HTML. Find following code,

<div id='banner'>             
<a class='banner' href='#'><img src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg-Vpq7a3k_1aopaPc4rJzClkjPIQlwN4ydqUOqh8ay_4IU3e51fQZQ1i_W649Rm834Ckucuextys9bKawjw7kNEvKe7PECSifw09GuoA1VNFguCxuBAo-MabxXHUNs2CC0fCjYLknk-kzd/s1600/empty_ad.gif'/></a>
</div>

Update the Image src and # with your banner image and url respectively.  If you want to put Google adsense code then just replace the complete <a class='banner'...</a> with your 468x60 adsense script

Meta Description & keyword (OPTIONAL)
--------------------------

Login to Blogger.  Go to Template -- Edit HTML. Find following code.

<b:if cond='data:blog.url == data:blog.homepageUrl'>
    <meta content='' name='description'/>
    <meta content='' name='keywords'/>
</b:if>

Update the value for contnet='' with your blog description and keywords.

NOTE: Search engines are no longer using Keywords meta tag. But, many users like to have this feature. If you do not want this then just remove it.