So you’ve been told that your website needs to be mobile-friendly… and so how do you make your website responsive? Here’s a quick video to teach you what Responsive design is and how to make your WordPress website responsive.
Check out these other helpful articles:

Mobile Websites vs Responsive

http://webtegrity.wpengine.com/blog/web-design-tips/mobile-websites-vs-responsive-websites/

Video to explain Responsive Design

http://webtegrity.wpengine.com/web-design-company-in-san-antonio/mobile-friendly-websites/

Plugins to help you make your website mobile-friendly

http://www.wpuniversity.com/blog/quickly-and-easily-make-your-wordpress-site-mobile-friendly