Get hold of the machine manual. There has to be some instructions on how to set it up, and the meaning of error codes.
As for bits breaking, are you running the spindle anywhere near 50,000 rpm? Hint: calculate how many turns the bit makes (at your spindle speed) when the material moves 1 inch. How much chipload does each cutting edge have to take per rotation? Is it a reasonable number?
First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)