TLP,
Although I am more than willing to answer any specific AGTEK technical question on this forum, I must admit that I have neither the time nor the inclination to produce and publish a comprehensive online AGTEK software training course for this, or for any other, public domain venue. That's not to say that I have not invested (and don't continue to invest) many hundreds of personal man-hours in producing meticulously detailed technical training manuals for various AGTEK earthwork software applications (that is, after all, much of what I do with my working time); it's simply a statement that I will not dump what I consider to be "intellectual property" into the public domain. Your comment "These days you have to be a fool to pay for training" reveals a wide and deep philosophical division between us and "you get what you pay for" is my first responsive thought (although my daughter could teach herself how to read music, play piano, and sing via reading free online articles and watching free YouTube videos, I foolishly pay for her piano and voice training).
These exchanges have diverted this thread far from its original topic, to which I would actually like to return. There are multiple cut/fill takeoff software products, on a range of price points (surprisingly, none are free), in the market. Will the lowest-priced "Yugo" product meet every earthwork estimator's needs? No! Does every earthwork estimator need a high-priced "Cadillac" product? No! However, I do think the minimum requirements must include the following capabilities: (1) model the existing site surface, (2) allow an adjustment for stripping the existing site surface, (3) model the final design surface, (4) allow an adjustment for engineered material thicknesses associated with the final design surface, (5) allow an adjustment for shrink/swell, and (6) calculate and report the cut/fill volumes.
If you recognize and understand the importance of the above minimum software requirements, then you will most likely also understand that a specific earthwork estimate can require far more analysis than the minimum software capabilities will easily accommodate (horizontal subtotal and phasing areas, differential subsurface existing materials, intermediate and/or corrective grading, etc.). Other cut/fill software variables to consider would include data-entry options (manual digitizing from paper and raster digital plans vs. importing vector data files), visualization and error-checking tools (3D views, profile views, cut/fill maps, contouring, Google Earth interface, etc.), editing options (error correction), output options (paper only vs. digital files for transfer to CAD, survey, machine control systems). Differences in all these options are what define the "Yugo" and "Cadillac" cut/fill takeoff software products and you will get exactly what you pay for.
For those interested in a far more detailed discussion on the subject of cut/fill takeoff software requirements (and for those who don't mind reading a dry 35-page footnoted academic paper) feel free to download a PDF copy of "Digital Surface Modeling and Volumetric Analysis Techniques Applied to the Measurement of Plan-View Earthwork Quantities" at
http://www.earthworksoftwareservices.com/downloads/whitepaper.pdf. Although it's dated (I wrote it 20 years ago, when the only practical data-entry option was manual digitizing from paper plans), it includes an overview of various manual earthwork takeoff methods and requisite adjustments, a detailed discussion of digital surface interpolation methods (grid vs. TIN), and a detailed discussion of volume calculation methods using digital surface models.
The paper referenced in the paragraph above does not provide any specific information on AGTEK software; for that, I suggest a good starting point would be to view the short online video demonstrations available on AGTEK's website per my original post in this thread.