Where to go solo, possibly? (4)
I believe the answer is:
oslo
'where to' is the definition.
The answer is a location as well as being a singular noun. This is suggested by the definition.
'solo possibly' is the wordplay.
'possibly' is an anagram indicator.
'solo' with letters rearranged gives 'OSLO'.
'go' is the link.
Can you help me to learn more?
(Other definitions for oslo that I've seen before include "Solo in Norway?" , "European capital city (found in Czechoslovakia!)" , "Capital of Norway" , "Scandinavian port" , "Nordic city" .)