Add a section on making home-made tools. And, how to use and hold them. I was stuck at the beginning (since DVD course didn't include tools).
I'm still trying to learn to hold
one L-Rod.
Haven't a clue how to work two at the same time. I'm L-Rod challenged...

There's a few microseconds of video in the first DVD with a clear shot of Louis Matacia's hands as he's holding his L-Rods. That gave me a starting point.
Add a nice long section on device-less dowsing, too!