Instruction manuals for coaches (6)
I believe the answer is:
tutors
'coaches' is the definition.
(I know this)
'instruction manuals for' is the wordplay.
I cannot really understand how this works, but
'for' could be 'to' (eg both can mean 'in the opinion of') and 'to' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for tutors that I've seen before include "Coaches" , "Mentors" , "Private instructors" , "Private teachers for students" , "Teachers of individuals or small groups" .)