Coach how to cheat (5)
I believe the answer is:
teach
'coach' is the definition.
(I know that coach is a kind of teach)
'how to cheat' is the wordplay.
'how' is an anagram indicator (I've seen this in other clues).
'cheat' is an anagram of 'TEACH'.
(Other definitions for teach that I've seen before include "Impart knowledge" , "Tutor" , "Blackbeard" , "Cheat (anag)" , "Provide learning to" .)