Since Simon posted the link to my old site"s Earth Energy page (Geopathfinder.com/9442), I though perhaps I'd best update the link. It now has its own website at http://www.geopathfinder.net
. And to answer your question of how to start, I'd suggest beginning with what you are currently good at, then stretch your questioning process and the tools you use to try new things.
For instance, when we moved to our present location 16 years ago I just walked around to find the site that both felt best and which offered the best drainage, solar potential, etc. I didn't simply try to feel it; I used every sense and all of my logical faculties and previous experiences. For me, dowsing/divination is a tool that I can turn on or off at will, just like my memories, logical reasoning, and my various other senses. I've done dowsing since 1982, but only started looking into energies in 2002. I've done lots of research but keep finding new things as I go along, and because the energy pattern of any location can change due to tectonic, animal-caused, or man-made alterations (among other possibilities).
A recent example: Last Fall one of our 12 year old sheep became suddenly lame and couldn't graze. I was walking out into the fields to collect choice bits of clover and alfalfa to feed her twice/day. I soon noticed that my neck muscles were seizing up and the vertebrae were making ominous cracking sounds. Chiropractic adjustments and massage didn't seem to help, so I just put up with it thinking the problem would go away when the sheep started eating hay later in the year. It didn't go away. Finally, now that I was unable to even turn my neck sideways easily, I decided that it was time to try dowsing the situation.
I asked to find any energy pathways or formations that might be causing my neck stiffness. I found a very straight pathway (single vertical plane) that reverses direction from day to night. It passed right through my bed pillow! On a geopathic scale of 0 to 16 it registered a 7; not enough to cause, for instance, cancer but not great either. Asking about when this new energy started passing through our home I narrowed it down to August 21, 2015. Asking about its source indicated disturbance of the local underground rocks by someone drilling a well 5 to 6 miles to our NW. I asked if it could be diverted or dissipated. Either would work but dissipation at both ends of the building was suggested. I did so with two 22" long vertical copper wires. Placement had to be precise since the energy pathway was less than 1/16" wide. The energy level was reduced to 0.07 on the 16-point scale, a 100-fold reduction. My neck is starting to loosen up after a couple of days but getting full freedom of movement back after being exposed for 5 months may take some time.....
Just goes to show, dowsing can be quite useful when all else fails!
"Develop an infallible technique, then place yourself at the mercy of inspiration." (from a craftsman, but it applies widely)