Student welcoming drops in support on course (7)

I believe the answer is:

trainee

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'student' is the definition.
(I've seen this in another clue)

'welcoming drops in support on course' is the wordplay.
'welcoming drops' becomes 'rain' (drops of water. I am not sure about the 'welcoming' bit.).
'in' is an insertion indicator.
'support on course' becomes 'tee' (golf tee on a golf course).
'rain' put inside 'tee' is 'TRAINEE'.

Can you help me to learn more?

(Other definitions for trainee that I've seen before include "Person being taught" , "21 [TYRO]" , "Aintree (anag.)" , "One being instructed" , "One learning a job" .)

I've seen this clue in The Times.

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