Tip from Chris Ramsey for youngster (4)
I believe the answer is:
calf
'youngster' is the definition.
(I've seen this before)
'tip from chris ramsey' is the wordplay.
'tip from' indicates taking the first letters.
'ramsey' becomes 'alf' (I can't explain this - if you can you should believe this answer much more).
The initial letter of 'chris' is 'c'.
'c'+'alf'='CALF'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for calf that I've seen before include "Young animal - part of leg" , "Baby elephant or whale" , "Animal that yields veal" , "Newborn cow" , "Bovine youngster" .)