Written explanation
1) Go to Blogger Dashboard → Layout → Page Elements.
2) Add a HTML/JavaScript Gadget.
3) Paste below code in it.
<style type="text/css">
.social-connect-widget{background:#FFF;border:1px solid #E7E6DE;padding:10px}
.social-connect-widget:hover{border:1px solid #CBCBC2;background:#F5F4EF}
.social-connect-widget a{text-decoration:none;font-weight:bold;font-family:Arial,Helvetica,Sans-serif;color:#4B4D4E}
.social-connect-widget a:hover{text-decoration:underline;color:#F77C04}
.social-connect-widget img{vertical-align:middle;margin-right:5px}
</style>
<div class='social-connect-widget' style='margin-top:0px;margin-bottom:10px;'>
<a href='http://feedburner.google.com/fb/a/mailverify?uri=USERNAME1' target="blank"><img alt='RSS Feed' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgZvRrGLjaG-vH15Ab8KKZnY3ueWxhPEAnxxeLV-cmAbaSqkY1xW2trEY6f5M_bqA2JmfA4_VDgowhWeRaypbob4gkt4nDw-kNPnrUPIn8rBs5WVgLkuCogEGKBU1GbILP2dagaJ5DEJ1E/h120/Pc+Tools+Tips.png' title='RSS Feed'/></a><a href='http://feedburner.google.com/fb/a/mailverify?uri=USERNAME1' target="blank">Subscribe to our RSS Feeds!</a>
</div>
<div class='social-connect-widget' style='margin-bottom:10px;'>
<a href='http://twitter.com/USERNAME2' target="blank"><img alt='Follow Us on Twitter!' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjINsX6kzDSC9vxI4CcWJypnM-PCN4ND4-6efG5OjIsr6tYqQ2t1aZMmVMpi7JfkL4PxtXx24LfBfNWsEvfdHqJXSi1H5tWOEsGetGqOtggyZaIconuQtsNrWdwGy4MrEMYCrvWecs_1E/h120/Pc+Tools+Tips.png' title='Follow Us on Twitter!'/></a><a href='http://twitter.com/USERNAME2' target="blank">Follow Us on Twitter!</a>
</div>
<div class='social-connect-widget' style='margin-bottom:10px;'>
<a href='URL HERE' target="blank"><img alt='Be Our Fan!' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg60L6PrS6mdIEbBYeQ3G3gL9feJuYCa8UXo6b9mV-buj2j26-U_iPRNnvjmUfqnj7ot_jOWbyRM7B1XjsOusvxDNo7eZFwluPXJXvaoEINOw_WCus2FTap0sXoLcpiHoVI9rVJdob3ZTU/h120/Pc+Tools+Tips.png' title='Be Our Fan'/></a><a href='URL HERE' target="blank">Follow us on Facebook!</a>
</div>
<div style='clear:both;'/>
<div class='addthis_toolbox'>
<div class='custom_images'>
<a class='addthis_button_twitter'><img alt='Twitter' height='32' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjRPT26ionS11GnIxzWhPHqj4oLk1nHcPP6doNGhgIwP3CE-Ugu46hZIVmA9EofoysCZFUR00ZMXdLfmWwnRxu8cJ9G0Ccv0LUCzbqi21QltpJkdQu3QXQq7w7mMmOpvdbIpMMJ5HnbKSQ/s1600/coolworld.in.png' width='32'/></a>
<a class='addthis_button_delicious'><img alt='Delicious' height='32' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhVerNdCy_c1_FCWWmzda4V8lVicPeEyn2ARaPsXcRijXYZb8UZjQWu_zLEic9ZSzW_UFlR13AG2AN1deg5WTfMl_XQqxY3-Ps49PMyBB7-KfswlDqTeD_uZiwVjvUn-g1n3VxWsSYcKRA/s1600/coolworld.in.png' width='32'/></a>
<a class='addthis_button_facebook'><img alt='Facebook' height='32' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjnjtsFjnS3YhjLNQtKke1fjlH7ur32RBmkpY11hyphenhyphenBqr5ZovGxCEYdluc_WgzDJ4Ar3dGgyJeIlHlw9Q44xaYeQ8hd-Qd5py53iraK2ezOaBDfg7wkTlnCUFMd-ymgwZC_dSVQxSzWuh1Q/s1600/coolworld.in.png' width='32'/></a>
<a class='addthis_button_digg'><img alt='Digg' height='32' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEghzOWzoEcRXG5toKDqQsddqxKg4l30V-kiIU7r0f5hzdyFSNe5rlmNvAbelbGNPdvhzqba0rwNS1YirLK0nbjeFeI6ZrQYXJAIIXG8APBEa2OuLBwgkOU2pTUwV4ZiEWQjQ8Y5TFwbr4M/s1600/coolworld.in.png' width='32'/></a>
<a class='addthis_button_stumbleupon'><img alt='Stumbleupon' height='32' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgUkcrT-zLKm5TRAKV9Dc4DIHVd9-6dIbTm6pS_VqNTOGSvrEV4ZPXQ6WFbhTw42US17ECljEw_cejRV_5NNTdW_arOzXfE4_Hq9iUeHjJT_l-YEwSGj9lUEoSaMmw7jgn7_zhHJIF3-GY/s1600/coolworld.in.png' width='32'/></a>
<a class='addthis_button_favorites'><img alt='Favorites' height='32' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyyNJISLH9BEUvTvFC-UybOLFH3e_tYCc280F6Z_7i8pHtDjow4vl1zQuxKk49k0N_e_sJM0akWDJWyfs0XwN2FK3bnyq5HTLn_mOEkE8Lx2BlYCiuvisAJfdji-8ZAfF11HxbsmpinRU/s1600/coolworld.in.png' width='32'/></a>
<a class='addthis_button_more'><img alt='More' height='32' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6UCNHalYXFjtwYiyOrN2lnIofeLP2xJ3XCeid5y3tsIBC126aUDabYSrfle1SgVXDSCUGfxfgiPlPDiutXiLPS54bZo4kR1tZPpL_amocQLVJpFmv1dk8uWHgRzceq55jDKxxoff8Qhc/s1600/coolworld.in.png' width='32'/></a>
</div>
<script src='http://s7.addthis.com/js/250/addthis_widget.js' type='text/javascript'/>
</div>
<div style='clear:both;'/>
</script>
</div>
</div>
</div>
4) Customize your setting.Find any word click F3 or Ctrl+F.
Replace it USERNAME1 with your Feedburner Username.
Replace it USERNAME2 with your Twitter Username.
Replace it URL HERE with your Facebook Username.
