Afterwards take a novice to one side (7)
I believe the answer is:
lateral
'side' is the definition.
('lateral' can be a synonym of 'side')
'afterwards take a novice to one' is the wordplay.
'afterwards' becomes 'later' ('later' can be a synonym of 'afterwards').
'take' is a charade indicator (letters next to each other).
'a novice' becomes 'l' (abbreviation for Learner e.g. on UK cars**).
'to' says to put letters next to each other (I've seen this in other clues).
'one' becomes 'a'.
'l' after 'a' is 'al'.
'later'+'al' is 'LATERAL'.
(Other definitions for lateral that I've seen before include "Relating to the side" , "Way of thinking" , "Sideways, like creative thinking" , "One type of thinking" , "Of, at or towards the sides (7)" .)