Shining learner with it (3)
I believe the answer is:
lit
'shining' is the definition.
(I've seen this in another clue)
'learner with it' is the wordplay.
'learner' becomes 'l' (as in a learner driver with L-plates on their car).
'with' says to put letters next to each other.
'l'+'it'='LIT'
(Other definitions for lit that I've seen before include "landed here" , "books etc?" , "Illuminated" , "was illuminating" , "Creative writing, in short" .)