Nouns

(n)novice, beginner, tyro, tiro, initiatesomeone new to a field or activity
(n)initiate, learned person, pundit, savantsomeone who has been admitted to membership in a scholarly field
(n)initiate, enlightenedpeople who have been introduced to the mysteries of some field or activity“it is very familiar to the initiate”

Verbs

(v)originate, initiate, startbring into being“He initiated a new program”, “Start a foundation”
(v)initiate, pioneertake the lead or initiative in; participate in the development of“This South African surgeon pioneered heart transplants”
(v)initiate, inductaccept people into an exclusive society or group, usually with some rite“African men are initiated when they reach puberty”
(v)broach, initiatebring up a topic for discussion
(v)lead up, initiateset in motion, start an event or prepare the way for“Hitler's attack on Poland led up to World War II”