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Motorists and golfers must do so to begin with (5,2,5)

Ross

I believe the answer is:

learn to drive

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'begin with' is the definition.
I know nothing about this answer so I cannot tell whether this works.

'motorists and golfers must do so to' is the wordplay.
I cannot quite understand how this works, but
'and' could be 'n' (common abbreviation for 'and') and 'n' is present in the answer.
'to' is within the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Globe and Mail.
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