Firebug is a free addon for Firefox that gives you some powerful development tools. It can help you diagnose issues in code, find where to change something in the code and even make those changes and preview them instantly.
“Firebug: Firefox Addon Video Tutorial” is an 8-minute tutorial that walks you through how to install and use Firebug. It’s another benefit of being a WebDesign.com premium member. Join today to get access to more than 250 hours of training content.