Having watched your CSS video about Firebug and Jetpack, I just tried to download Firebug and instead of it going straight to my browser as per your video, its gone to a downloads file. Clicking on it gives a message to say there’s no application available to open the file…directs me to search the App Store for one.
Does that sound right? If so, can you recommend the App I need to be able to open the document/install it properly to my browser?
Am using a (new) Mac Book Pro