1) Create Page own Google Pluse
2) Then you can go to the https://developers.google.com/+/plugins/badge/
3) Which type of Bladge you want
Then your 14 digit string provide your page URl
Go to https://developers.google.com/+/plugins/badge/config
provide then some Java Script code then you past in HEAD tag
<!-- Place this tag in the <head> of your document -->
<link href="https://plus.google.com/Your 14 Digit no provide by your google pluse" rel="publisher" /><script type="text/javascript">
(function()
{var po = document.createElement("script");
po.type = "text/javascript"; po.async = true;po.src = "https://apis.google.com/js/plusone.js";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(po, s);
})();</script>
<link href="https://plus.google.com/Your 14 Digit no provide by your google pluse" rel="publisher" /><script type="text/javascript">
(function()
{var po = document.createElement("script");
po.type = "text/javascript"; po.async = true;po.src = "https://apis.google.com/js/plusone.js";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(po, s);
})();</script>
--------------------------------------------------------------------
Finally post your code in
<g:plus href='https://plus.google.com/Your 14 Digit no provide by your google pluse' size='badge'/>
