BobCad/CAM V23. Do you have a machine? That is also important to learn how, and get your output to work with your machine controller. We also use a pc based Controller called Mach3. you can demo both these. The BobCad package is Dongle based so you can do whatever you want, just cant post code or save the models. But you can bring in your MoI stuff and practice doing Cam operations with it.