One tool that I use every single day as a web developer is Firebug. Joe Hewitt is my hero for having put together this incredibly useful piece of software.

Anyway, Firebug has been around for a while now. Just the other day a follow developer was helping me work through a problem. She opened up Firebug in FireFox and did a few things I had never seen before. That is when I knew I needed to read about the tool a little more to get a better understanding of it. I found a really good video tutorial by Digital Media Minute. After all this time using Firebug I found out about a few things I never knew before. If you are using Firebug or are a web developer that does not yet you should check this out.