How To add (facebook) social Media Plugin In Your Site (Blogger site, WordPress Site or any other site) You can add with following steps

1)    Add YouTube Subscribe Button 

•    Fisrt Open this site – https://developers.facebook.com/docs/plugins

•   Login with your facebook Id 

• If you want to add facebook page like button 

• Then select on the site such as : https://developers.facebook.com/docs/plugins/like-button

• After click you redirect on this page then

• Like Button Configurator –>  Paste your facebook page URL link such as :  –https://www.facebook.com/unkn0wn.author

• Copy Script tag from Code section

•     Paste this tag in Blogger -> Laoyout -> Gadget ->Choose HTML/javscript and paste here.