[aldaeron]

The programming is not hard at all as Andrew said. There are many programs (MasterCAM, SolidCAM, VisualMILL, etc). Two clarifications

First, when you are in Inventor save or export the file as a STEP file (I use SolidWorks so I am not sure what menu it is in - my guess is that 'Save As ...' will allow you to choose STEP). This is a neutral format that any CAM program can read. Some CAM programs do read .IPT but there is no guarantee. STEP is a format everyone uses. Try to avoid IGS/IGES.

Second, you need to know what post-processor your CNC uses so you can tell the CAM program what type of codes to export. Different systems use different codes to represent the same thing. In the maker space I use there are lots of older random machines, each with its own set of codes. If you try to run Bridgeport G Codes on a LinuxCNC conversion the program will not work and the controller will beep at you a lot.

Good luck!

-matto-