Install Fiddler from this location (.NET framework 4 needs to be installed. It is installed in most windows machines nowadays)
Close all existing browsers and open a new browser window (This is important because fiddler captures all traffic originating from the machine and sometimes existing browser windows may send some personal information)
Make sure that the capture traffic is enabled
Now open the tute lesson from the browser. You should start seeing traffic in the fiddler window. Specifically you see traffic to roomxxx.tute.com (room139.tute.com in the screencap below)
Once the testing is finished (This should include changes to presentation), export the fiddler session by clicking on file->export sessions->all sessions
Choose httparchive1.1 as the export format
Save the file to the local disk and send it to tute for further investigation.