a few questions

Hi, I just purchased what I think is a great deal, a nib eco 8 with many upgrades and a jeti phasor 30-3 brushless motor. I don't know much about these motors. What dose 30-3 mean ? also can I use any brushless controler or do I have to use one from jeti ? ALso anything else that would help. I am not new to the hobby been building for more years than I want to admit but the brushless thing is new to me.
Thanks for any help