Yes, the whole process is very hit and miss at present with no real guides to help us. My current machine isn't very fast and endless testing just to see what a particular material parameter does and how it does it is very time consuming and I really don't have that much spare time as it is.
More complete documentation, example scenes to pick apart and guides would be a great time saver for many of us. I know experimentation is part of the process but a push in the right direction would be much appreciated.
Even if this material was generously provided by some of the more experienced users it would be a great help.