We've talked about making a video showing some of the features and how to use them but haven't gotten around to it. For now we basically only have the
webpage which has brief descriptions of everything - and there is a help system within UHCTools, you should be able to type help (or uhchelp depending on your OS) followed by any command found in UHC/C or UHC/S to get a description of what they are used for and how to use them.
There is no GUI available or planned at the moment.