Sidebar buttons are a quick and easy way to affiliate with, promote, or endorse a company or website you believe it.
How you add a button to your sidebar depends in large part on the type of site you have. For example if you have a WordPress blog then it’s going to be a different process than if you have a HTML site.
Here it is in a nutshell –
First you’ll want to click on the button image and save it on your desktop. If you’re using Blogger then you’ll have to upload the image into an image host like Photobucket or Flickr.