Details a lot of foolish questions book ignored (3,3,4)
I believe the answer is:
ins and outs
'details' is the definition.
(I've seen this before)
'a lot of foolish questions book ignored' is the wordplay.
I cannot really see how this works, but
'a' could be 'an' and 'an' is found within the answer.
'lot' could be 'd' and 'd' is present in the answer.
'of' could be 'o' and 'o' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for ins and outs that I've seen before include "Details" , "signs on doors perhaps" , "parliamentary election result?" , "cabinet reshuffle?" .)