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Begin to teach the fundamentals to (8)

Ross

I believe the answer is:

initiate

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'begin' is the definition.
(I've seen this before)

I don't understand the remainder of the clue.

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(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" .)

I've seen this clue in The Irish Independent.
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