See a point if you're able (3)

I believe the answer is:

can

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'able' is the definition.

'see a point' is the wordplay.
'see' becomes 'C' (the word for the letter, according to Chambers).
'point' becomes 'n' (N is an example).
'c'+'a'+'n'='CAN'

'if you're' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for can that I've seen before include "Billy" , "John" , "toilet" , "Possesses ability" , "let go in the US" .)

I've seen this clue in the Evening Standard.

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