Some buy e-book about respect (4)
I believe the answer is:
obey
'respect' is the definition.
(I've seen this before)
'some buy e-book about' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'about' says the letters should be written backwards.
'yebo' is hidden in the letters of 'buy e book'.
'yebo' reversed gives 'OBEY'.
(Other definitions for obey that I've seen before include "Carry out (an order)" , "Act in accordance with (law)" , "Do as ordered" , "Be ruled by" , "Do as you're told!" .)