A little short of detail. However, I know from your introduction post that you're using Mach3, and therefore on a PC. This might not be what you expect or want to hear, but I'd suggest looking at whatever CAD/CAM software you have and just look at basic/primitive operations. If you haven't established your CAD/CAM workflow yet (and this is a big undertaking), then get hold of the evaluation copy of CAMBAM, and use that to create a couple of SIMPLE shapes, and get used to generating the CAM GCode for those - a simple 2-point line, or a 3-point triangle. You'll learn more from that than crashing a tool through an unknown pre-generated programme. And it's easier to help you out if there's issues along the way.