Once again picks up a learner to offer practice (9)
I believe the answer is:
rehearsal
'practice' is the definition.
(rehearsal is a kind of practice)
'once again picks up a learner' is the wordplay.
'once again picks up' becomes 'rehears' ('hears' can be a synonym for 'picks up' so perhaps 'rehears' is OK for 'once again picks up').
'learner' becomes 'l'.
'rehears'+'a'+'l'='REHEARSAL'
'to offer' is the link.
(Other definitions for rehearsal that I've seen before include "Practice in theatre etc" , "Practice session in preparation for public performance" , "Drill" , "preparation in house?" , "Dry run" .)