initiate

someone new to a field or activity

bring up a topic for discussion

bring into being

“He initiated a new program”

people who have been introduced to the mysteries of some field or activity

“it is very familiar to the initiate”

accept people into an exclusive society or group, usually with some rite

“African men are initiated when they reach puberty”

someone who has been admitted to membership in a scholarly field

set in motion, start an event or prepare the way for

take the lead or initiative in; participate in the development of