Basic study covered by group banned at first, say (5-3-6)
I believe the answer is:
bread and butter
'basic' is the definition.
(I've seen this before)
'study covered by group banned at first say' is the wordplay.
'study' becomes 'read' (synonyms).
'covered by' indicates putting letters inside.
'group banned at first' becomes 'bandb' (I can't justify this - if you can you should give a lot more credence to this answer).
'say' becomes 'utter' (I've seen this before).
'read' put into 'bandb' is 'breadandb'.
'breadandb'+'utter'='BREAD-AND-BUTTER'
Can you help me to learn more?
(Other definitions for bread and butter that I've seen before include "fare" , "pudding" , "basic source of income" , "Living" , "Main source of income" .)