I want to purchase a goat

First decide why you want the goat. For meat or fattening, Black Bengal, Barbari, Sirohi × Boer cross, Osmanabadi, or Malabari are good. For milk, Jamunapari or Beetal are better. For breeding, Jamunapari, Beetal, Osmanabadi, or Sirohi are solid choices. Buy a young, active animal with no cough or nasal discharge, and check the teeth and vaccination record. If you tell me your purpose, I will narrow it down for you.