Easy task that keeps learner secure (6)
I believe the answer is:
clinch
'secure' is the definition.
(clinching is a kind of securing)
'easy task that keeps learner' is the wordplay.
'easy task' becomes 'cinch' (a cinch is a very easy task).
'that keeps' is an insertion indicator.
'learner' becomes 'l' (as in a learner driver with L-plates on their car).
'cinch' going around 'l' is 'CLINCH'.
(Other definitions for clinch that I've seen before include "Drive home (an argument)" , "Fierce embrace" , "Clutch" , "make secure" , "Settle conclusively, a deal say" .)