A youngster you can raise (3)
I believe the answer is:
pup
'a youngster' is the definition.
(a pup is a young dog)
'can raise' is the wordplay.
I cannot really understand how this works, but
'raise' could be 'up' (I've seen this in other clues) and 'up' is present in the answer.
A single letter 'p' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
'you' acts as a link.
Can you help me to learn more?
(Other definitions for pup that I've seen before include "Youngster" , "Young of canines" , "Young of various animals" , "Small palindromic dog" , "Produce litter" .)