Studying how to make stuffing? (8)

I believe the answer is:

cramming

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'studying' is the definition.
(cramming is a kind of studying)

'to make stuffing?' is the wordplay.
'to make' becomes 'c' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'stuffing?' becomes 'ramming' (ramming is a kind of stuffing).
'c'+'ramming'='CRAMMING'

'how' acts as a link.

Can you help me to learn more?

(Another definition for cramming that I've seen is " Stuffing - studying hard".)

I've seen this clue in the Evening Standard.

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