Don`t worry.

Everyone started from no knowledge at all. I Bought a machine second hand, immediately the pc that came with it broke.
So then I had to do some quick learning and silly mistakes including a new motion controller and software learning.

I would not say it is easy but many people on here answered my dumb questions and the machine lived again. I have since used it to produce quite a lot of woodwork projects which would have been very difficult without it.

There is some great resources on youtube for software and hardware information.

Ollie