Take courses in shelter? That’s most clever (7)
I believe the answer is:
neatest
'most clever' is the definition.
(I've seen this in another clue)
'take courses in shelter?' is the wordplay.
'take courses' becomes 'ate' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'in' is an insertion indicator.
'shelter?' becomes 'nest' (I've seen this in another clue).
'ate' placed into 'nest' is 'NEATEST'.
'that's' is the link.
Can you help me to learn more?
(Other definitions for neatest that I've seen before include "Seat ten (anag)" , "best-looking desk, say?" , "Most tidy" , "Most smart" , "Most orderly" .)