An S5 slide show giving a basic overview of Firefox's built-in web development tools, as well as some useful web developer extensions that are available.
Quick one page guide showing basic CSS syntax
Quick one page guide showing basic HTML syntax
Quick one page guide showing Java syntax for begineers
Quick one page guide showing Firefox keyboard and mouse shortcuts, as well as tips and tricks.
1src Forums Search Plugin is a Mozilla or Firefox plugin for 1src.com that that will search 1sr's user forums.