Ask him for some good advice (3)
I believe the answer is:
dad
'ask him' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'some good advice' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'DAD' is hidden in the letters of 'good advice'.
'for' is the link.
Can you help me to learn more?
(Other definitions for dad that I've seen before include "Papa" , "Relation" , "Old man" , "Pop, pater" , "Popular and informal father" .)