No offence but you shouldnt be running a cnc machine in the first place if you DONT understand G code. its not only expensive if you screw up its dangerous and frankly down right stupid.
your wasting your money on any cadcam system and your time, cause you have no clue what the output is going to look like.
Have someone with the same type of machine send you a sample program, surely there is a sample program in your machine now? if not ask the person you bought it from for one or look online for one.