hIYA Blue I understand where you are going with the discussion I have had the same decision with different generations 100s of times. My point IS there is very little MONEY in the DIY cnc market for the developers of things. Most use the same model that has been used for years and years.
I create the gizmo but you have to figure out HOW to use it because I cannot afford to write a concise manual to bring you from scratch to CNC master. BECAUSE Most of that Documentation would have nothing to do with the Gizmo I provide.
It was the same when I started playing in metal ART. The machining side I had done for generations knew it top to bottom left to right. BUT the design side software (Graphic design programs) was like a Hot Spanish romance novel written in Latin. It took a long time for me to figure out what they were implying function wise in the software.
NOW if you want to be a millionare sit down and write a precise simple Book for the market to use. But you will find quickly that it is a very BROAD subject that does not lend to easy explanation as they are SO many ways to do each function and none of them are wrong or right. SO the terms Precise and simple don't go together well.
Now there IS a CNC book for CNC beginners. " EASY CNC" written by David Benson. It is written for a CNC beginner and covers most of the BASICs but is more specific to a different controller.
http://www.cadcamcadcam.com/bookeasycncbydavidbenson.aspx(;-) TP