Begin to teach the fundamentals to (8)
I believe the answer is:
initiate
'begin' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for initiate that I've seen before include "having special knowledge" , "Inaugurate, set in motion" , "Start - trigger" , "Admit into closed society - beginner" , "found" .)