Making a comeback, be aware of geeky type (4)

I believe the answer is:

wonk

I'm a little stuck... Click here to teach me more about this clue!

'geeky type' is the definition.
I can't judge whether this definition defines the answer.

'making a comeback be aware' is the wordplay.
'making a comeback' shows that the letters should be reversed in order.
'be aware' becomes 'know' (I've seen this before).
'know' backwards is 'WONK'.

'of' is the link.

Can you help me to learn more?

I've seen this clue in The Everyman puzzle in The Observer.

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