Came to study about revolutionary (7)
I believe the answer is:
reached
'came to' is the definition.
(to come to is to reach or arrive at)
'study about revolutionary' is the wordplay.
'study' becomes 'read' (synonyms).
'about' means one lot of letters goes inside another.
'revolutionary' becomes 'che' (Che Guevara the Marxist revolutionary).
'read' placed around 'che' is 'REACHED'.
(Other definitions for reached that I've seen before include "Cad here (anag.)" , "Came to (a place)" , "Attained" , "Stretched or arrived" .)