https://www.youtube.com/watch?v=8UiNJCb6gLo
There is NO password or logon name, this is a PUBLIC domain site.
To view a segment (currently there are 12), simply Click on a URL (listed also on NEWS, or a matching pdf Chapter to access any Refereeing and lawn craft YouTube linked segment or explanation within this book. There will also be text and some hopefully explanatory diagrams., and some quizes.
Select " News": or Manual PDF Chapter, and then, Click NEXT (or skip select) to advance the sections.
The URL's can also be downloaded onto Android or Mac IPads or tablets/phones.