Add Related Posts Widget to Blogger/Blogspot

Here are the steps to  Add Related Posts Widget to Blogger/Blogspot...

STEP 1-
Go To Blogger Dashboard >> Template >>Edit HTML

STEP 2-
Press CTRL + F

STEP 3-
Now type the given code in the box.
</head>

STEP 4-
Paste this code ABOVE/BEFORE " </head> " Tag

 <!--Related Posts with thumbnails Scripts and Styles Start-->
<!-- remove --><b:if cond='data:blog.pageType == &quot;item&quot;'>
<style type='text/css'>
#related-posts{float:left;width:auto;}
#related-posts a{border-right: 1px dotted #eaeaea;}
#related-posts a:hover{background: #f2f2f2;}
#related-posts h2{margin-top: 10px;background:none;font:18px Oswald;padding:3px;color:#999999; text-transform:uppercase;}
#related-posts .related_img {margin:5px;border:4px solid #f2f2f2;width:100px;height:100px;transition:all 300ms ease-in-out;-webkit-transition:all 300ms ease-in-out;-moz-transition:all 300ms ease-in-out;-o-transition:all 300ms ease-in-out;-ms-transition:all 300ms ease-in-out;}
#related-title {color:#222;text-align:center;padding: 0 10px;font-size:14px Oswald; line-height:16px;text-shadow:0 2px 2px #fff;height:28px;width:100px;}
#related-posts .related_img:hover{border:4px solid #E8E8E8;opacity:.7;filter:alpha(opacity=70);-moz-opacity:.7;-khtml-opacity:.7}</style>
<script type='text/javascript' src='http://helplogger.googlecode.com/svn/trunk/relatedposts.js' />
<!-- remove --></b:if>
<!--Related Posts with thumbnails Scripts and Styles End-->

NOTE :-
- to change the width and height of thumbnails, modify the 100px value in red
- to change the color and size of related posts titles, change the value in blue
- remove the line in violet if you want the related posts to be displayed in homepage too

STEP 5-
Now find the code given below (you might find it twice, stop at the second one)
<div class='post-footer'>

STEP 6-
Paste the given code

<!-- Related Posts with Thumbnails Code Start-->
<b:if cond='data:blog.pageType == &quot;item&quot;'>
<div id='related-posts'>
<b:loop values='data:post.labels' var='label'>
<b:if cond='data:label.isLast != &quot;true&quot;'>
</b:if>
<b:if cond='data:blog.pageType == &quot;item&quot;'>
<script expr:src='&quot;/feeds/posts/default/-/&quot; + data:label.name + &quot;?alt=json-in-script&amp;callback=related_results_labels_thumbs&amp;max-results=5&quot;' type='text/javascript'/></b:if></b:loop>
<script type='text/javascript'>
var currentposturl=&quot;<data:post.url/>&quot;;
var maxresults=5;
var relatedpoststitle=&quot;<b>Related Posts:</b>&quot;;
removeRelatedDuplicates_thumbs();
printRelatedLabels_thumbs();
</script>
</div><div class='clear'/>
</b:if>
<b:if cond='data:blog.url == data:blog.homepageUrl'><b:if cond='data:post.isFirstPost'>
<a href='http://helplogger.blogspot.com'><img alt='Blogger Tricks' src='http://3.bp.blogspot.com/-K65p5zLLKQk/T3ObCINoP7I/AAAAAAAABmI/dF84-alnOu4/s1600/best+blogger+tips.png'/></a>
</b:if></b:if><!-- Related Posts with Thumbnails Code End-->

NOTE -
- change the 5 value from max-results=5 with the number of posts you want to be displayed
- if you want the related posts to be displayed on homepage too, then remove the lines in violet

STEP 7-
Save the template... 

Enjoy .... :)
And if u have any problem contact me through comment...