Books given to staff showing long seat (7)
I believe the answer is:
ottoman
'long seat' is the definition.
'ottoman' can be an answer for 'seat' (I've seen this in another clue). I'm not certain of the 'long' bit.
'books given to staff' is the wordplay.
'books' becomes 'OT' (Old Testament).
'given' says to put letters next to each other.
'staff' becomes 'man' (as in staffing or manning a particular place).
'ot'+'to'+'man'='OTTOMAN'
'showing' acts as a link.
Can you help me to learn more?
(Other definitions for ottoman that I've seen before include "Am not to (anag)" , "A long cushioned seat for an old Turk?" , "Backless seat" , "Low, padded seat - Turkish empire" , "Turkish empire of over 600 years" .)