 How to Display Posts via Labels:
The first thing you need to do is to log in to your account. After logging in go to Blogger >> Layout >> (Tab Widget 1) >> and paste the following piece of coding in the HTML Box. After pasting the code, you need to work with Labels to display the posts. Just replace Featured with any other label you are willing to use to display the posts. Once done, save the widget.

1. Normal Style:

    <script type='text/javascript'>
    var numposts = 6;
    var showpostthumbnails = true;
    var displaymore = false;
    var displayseparator = false;
    var showcommentnum = false;
    var showpostdate =  false;
    var showpostsummary = true;
    var numchars = 100;</script>
    <script type="text/javascript" src="/feeds/posts/default/-/Featured?orderby=updated&alt=json-in-script&callback=labelthumbs"></script>

vCard Grid Template

2. Grid Style:

    <div class="normal_grid">
    <script type='text/javascript'>
    var numposts = 9;
    var showpostthumbnails = true;
    var displaymore = false;
    var displayseparator = false;
    var showcommentnum = false;
    var showpostdate =  false;
    var showpostsummary = true;
    var numchars = 100;</script>
    <script type="text/javascript" src="/feeds/posts/default/-/Grid?orderby=updated&alt=json-in-script&callback=labelthumbs"></script>
    </div>

vCard Grid 2nd Layout  

3. Small Grid Style 

    <div class="grid_layout">
    <script type='text/javascript'>
    var numposts = 12;
    var showpostthumbnails = true;
    var displaymore = false;
    var displayseparator = false;
    var showcommentnum = false;
    var showpostdate =  false;
    var showpostsummary = false;
    var numchars = 100;</script>
    <script type="text/javascript" src="/feeds/posts/default/-/Featured1?orderby=updated&alt=json-in-script&callback=labelthumbs"></script>
    </div>

vCard Grid 3rd Layout

How to Display Recent Posts:
If you are willing to display Recent Posts then you have to follow same steps. Go to Blogger >> Template >> Edit HTML >> (Tab Widget 4) >> and paste the following piece of coding in the HTML Box. Once everything is done, save the widget.

    <script type='text/javascript'>
    var numposts = 6;
    var showpostthumbnails = true;
    var displaymore = true;
    var displayseparator = false;
    var showcommentnum = false;
    var showpostdate =  false;
    var showpostsummary = true;
    var numchars = 150;</script>
    <script type="text/javascript" src="http://rdesigntheme.blogspot.com/feeds/posts/default?max-results=6&orderby=published&alt=json-in-script&callback=labelthumbs"></script>

How to Rename Tab Widget Title?
To Rename the title of 5 tabbed widget area, you have to get into the Template coding. Go to Blogger >> Template > Edit HTML >> and search for <!-- Tab Widget Names --> . Now you will be able to see the titles of the tabbed widget. Now change and customize it according to the desire needs.