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• Call kb_debug with any arguments that you want to log and they will be pretty printed at the end of the document.
• To log and show a list of all warnings, errors and notices generated by your plugin, add ?KB_Debug_Errors to your URL.
• To see a list of all hooks in the order they fire as well as what arguments they are called with and what functions run on them (again, in which order), add a ?KB_Debug_Hooks to the URL.

To see both just add ?KB_Debug_Errors&KB_Debug_Hooks. (Essentially $_GET[var] must be set to enable that feature).