How to add Social Media Buttons to Share Every Post

Login to your blog & click on the theme option.
In the Theme window open "Edit HTML" option.
Edit HTML Window open press Ctrl + F.


Find Box Appear, In search box type post-footer.
You see the code line: <div class ='post-footer-line post-footer-line-1>
Copy the below code & paste after the above line.

<!-- AddThis Button BEGIN -->

<div class='addthis_toolbox'>
<div class='custom_images'>
<a class='addthis_button_share'><img alt='Share this Post' border='0' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj_dRU8Ut2gWpk1RMQ_E-uVTcTbP05d20dYUWum3uXY5-LuEGrMz39DzptcRCbQmhBdAay4oj2bAPFG2p25etNll6MAjNaz-_ceoRvQlRP4jU_UwURYxsEjpCsqBpaKXgy6e4SEaG10x43t/s1600/Share+this+Post.png'/></a>
<a class='addthis_button_facebook'><img alt='Share to Facebook' border='0' height='30' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgdoZ-97tQ0HoSv1ASmLRnGq8rZUrNsPmSBpGtOfZMvhkCChK-QU5B-UHgYUtCCydJBKIyPXJCFtEt_1jRMz_LBmJsXW7aik5Xhv9fkwO1FXv-Tu8eoFUXn5G_-pSPTkj7BQGt7qJV2_3Nj/s1600/Facebook+Button+Share.png' width='30'/></a>
<a class='addthis_button_twitter'><img alt='Share to Twitter' border='0' height='30' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRazxqMGaDGfBAD67z4LXRfh052wODK3OXNPS3xMqRitXIk2zkPqsaXu7AAKpTF9DGYeGqPBd9s2jIcS_TyW6h4OocqnrSy8QF7v-txNkfCoRwvCZrJIe-kHEd_7NTeG5mwNOB_L1bIGt1/s1600/Twitter+Button+Share.png' width='30'/></a>
<a class='addthis_button_email'><img alt='Email This' border='0' height='30' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh1gvNicFWj4nveHrUELkQ1KGeAYyZSAOYUimIV70BnONH8io0rw0eWIZbSOP1FzgJQ5N2qw2F4IWFnocboM6HGW3bCnpOq_6O_9J8G-KISm-u9e_3TPiWff0NL_TBE44sYluq939bglqtO/s1600/Email+Button+Share.png' width='30'/></a>
<a class='addthis_button_pinterest_share'><img alt='Pin This' border='0' height='30' src='https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgnNr4LlX4rLW5pBXvFtveN2fJ1CmXRDZKUwOpQ2TAE4qKeZBmJtd9xbfD17x020hcF6gfTzprc0wjOrqQxfPuNpR4rsZ5rQxjnnQ47799a7mPoBFz3698aXvdrJEld0UKYzyyiZ4esGHSK/s1600/Pinterest+Button+Share.png' width='30'/></a>
</div>
</div>
<script type='text/javascript'>var addthis_config = {"data_track_addressbar":false};</script>
<script src='//s7.addthis.com/js/300/addthis_widget.js#pubid=ra-511bbe8405a64ebd' type='text/javascript'/>
<!-- AddThis Button END -->

Download the theme backup before making any changes.