Step Four, Pin It like a Pro.

Step 4 ..If your blog has lot of images, you should definitely add Pinterest social media link.
For quick and easy steps, follow:

• Step 1, Add new html/script gadget from 'Layouts' admin page link
• Step 2, Give a catchy title
• Step 3, Drop the code below to the text box and save.. easy, high5. 

<script type="text/javascript" src="//assets.pinterest.com/js/pinit.js"></script> <a href="//pinterest.com/pin/create/button/" data-pin-do="buttonBookmark" > <img  src="//assets.pinterest.com/images/pidgets/pin_it_button.png" /></a>

You need more, you got it.
Just head to the pinterest own site for more ways to pinnnnit.
http://business.pinterest.com/widget-builder/#do_pin_it_button