· you can go to http://www.fiddler2.com to get the tool and then:
· Training: http://fiddler2.com/Fiddler/help/ - I watched the demonstration videos, which were helpful
· Fiddler PowerToy - Part 1: HTTP Debugging: http://msdn2.microsoft.com/en-us/library/bb250446.aspx
· Fiddler PowerToy - Part 2: HTTP Performance: http://msdn2.microsoft.com/en-us/library/bb250442.aspx
· see http://httpweb for some more details on the status codes
