initiate

someone new to a field or activity

someone who has been admitted to membership in a scholarly field

people who have been introduced to the mysteries of some field or activity; "it is very familiar to the initiate"

bring into being; "He initiated a new program"; "Start a foundation"

take the lead or initiative in; participate in the development of; "This South African surgeon pioneered heart transplants"

accept people into an exclusive society or group, usually with some rite; "African men are initiated when they reach puberty"

bring up a topic for discussion

set in motion, start an event or prepare the way for; "Hitler's attack on Poland led up to World War II"