Teach how to swindle (5)
I believe the answer is:
'to swindle' is the definition.
'teach' is the wordplay.
'teach' can be anagrammed to 'CHEAT'.
Though, I'm unsure how the anagram is indicated.
'how' acts as a link.
Can you help me to learn more?
(Other definitions for cheat that I've seen before include "Hoodwink" , "One dealing dishonestly" , "rook" , "Dishonest dealer" , "Deceive, defraud" .)