Hi, I would like to answer : @friendlytester: How to get started/what to do if you get stuck?
I think a way to get into reporting your exploratory testing could be to use an existing charter template (any online one) and edit the details to capture your product under test. Time box your session and then have your notes/videos/screenshots ready to review. Step 2 would be to create another similar style charter, however this time not from an existing template, but your own charter and see how both charters differ from one another and what did you learn from both charters?
If you get stuck which I have once, I would take a short break and come back to it and have my goals in front of me to proceed and get back in track again. Otherwise if I am really stuck/distracted then I would prefer to start from scratch