It is there for the asking (8,4)
I believe the answer is:
question mark
'it' is the definition.
The definition suggests a singular noun which matches the answer.
'is there for the asking' is the wordplay.
'is there' becomes 'mark' (I can't explain this - if you can you should believe this answer much more).
'for' is a charade indicator (letters next to each other) (I've seen this in other clues).
'the asking' becomes 'question' (question is a kind of asking).
'mark' put after 'question' is 'QUESTION-MARK'.
Can you help me to learn more?
(Other definitions for question mark that I've seen before include "Not believe the gospel" , "Expression of uncertainty" , "What ends this" , "Query" .)