Oscar Furlong starts craze to go hunting (6)
I believe the answer is:
forage
'go hunting' is the definition.
'forage' can be an answer for 'hunting' (thesaurus). I am not certain of the 'go' bit.
'oscar furlong starts craze' is the wordplay.
'oscar' becomes 'o' (phonetic alphabet: alpha, bravo, charlie etc.).
'furlong' becomes 'f' (this might be a standard abbreviation which I don't know about).
'starts' says to put letters next to each other.
'craze' becomes 'rage' ('rage' can be a synonym of 'craze').
'o' after 'f' is 'fo'.
'fo'+'rage'='FORAGE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for forage that I've seen before include "Rummage, search for" , "Wander and feed" , "Hunt for food or provisions" , "Rummage, go searching" , "look around" .)