I tut about charge for lessons (7)
I believe the answer is:
tuition
'lessons' is the definition.
(I've seen this before)
'i tut about charge' is the wordplay.
'about' means one lot of letters goes inside another.
'charge' becomes 'ion' (an ion is a charged particle).
'i' placed within 'tut' is 'tuit'.
'tuit'+'ion'='TUITION'
'for' is the link.
(Other definitions for tuition that I've seen before include "Training" , "practice" , "Lessons" , "Schooling" , "Personal coaching" .)