Writer cries afresh about book (6)
I believe the answer is:
scribe
'writer' is the definition.
(scribe is a kind of writer)
'cries afresh about book' is the wordplay.
'afresh' is an anagram indicator.
'about' indicates putting letters inside.
'book' becomes 'b'.
'cries' is an anagram of 'scrie'.
'scrie' placed around 'b' is 'SCRIBE'.
(Other definitions for scribe that I've seen before include "A writer of old" , "Ancient copyist of manuscripts" , "One copied documents before the invention of printing" , "Scholar of Jewish law" , "Letter-writer of old" .)