Gratuitous information? (3)
I believe the answer is:
tip
'information?' is the definition.
(I know that tip is a type of counsel)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for tip that I've seen before include "The extreme end of something" , "given gratuitously" , "Point; sweetener" , "Hint, suggestion" , "for writers, it may be felt" .)