New Owner of My KMT

Greetings all Seniors of KMT

I just own a new KMT and would like to have a few question for help :
1. How do i learn to communicate with my KMT & How i know he heard me?
2. How i know if my KMT is Happy or Unhappy with me?
3. Any specific advice for new owner of KMT like me?
4. Mine is KMT Amulet, how do i feed him? Eat as what i eat?

Thanks all