Author in love with son begins show (5)
I believe the answer is:
opens
'begins show' is the definition.
'opens' can be an answer for 'begins' (opening is a kind of begining). I'm not sure about the 'show' bit.
'author in love with son' is the wordplay.
'author' becomes 'pen'.
'in' indicates putting letters inside.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'with' says to put letters next to each other.
'son' becomes 's'.
'o'+'s'='os'
'pen' put into 'os' is 'OPENS'.
Can you help me to learn more?
(Other definitions for opens that I've seen before include "expands" , "Takes the cover off" , "Unseals" , "Launches" , "Unlocks" .)