First, generate your social media buttons here: https://www.niftybuttons.com
Then login into your WordPress Dashboard (Example: www.your-website.com/wp-admin)
Go to Appearance >Widgets.
Find a widget called “Text Widget”
Click on it and drag to the widget area where you want your social media icons to live.
Enter title of your widget.
Click the “Text” tab on the widget so you can enter code.
Paste in your code.