Re: Avtar in Hinduism?
Brahman or Para Brahman is the unchanging reality amidst and beyond the world. It has been described in Sanskrit as Sath-chith-Ananda (being-consciousness-bliss)and as the highest reality. According to upanishads the supreme Brahman is infinite. The infinite proceeds from infinite. If you subtract the infinite from the infinite, the infinite remains alone.
Brahma is one of the trimurthi and associated is with creation. Brahma also gets absorbed back into Brahman at the end of an aeon, and is born again at the beginning of a new kalpa. Remember I mentioned that our creation is cyclic .
Brahmin is currently a inherited caste but was not so originally. They are the priests and acharyas - teachers.