Get love by taking an interest now, for starters (6)
I believe the answer is:
obtain
'get' is the definition.
(I know that get can be written as obtain)
'love by taking an interest now for starters' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'for starters' says to take the initial letters.
The initial letters of 'by taking an interest now' is 'btain'.
'o'+'btain'='OBTAIN'
(Other definitions for obtain that I've seen before include "Take possession of" , "Hold good" , "Get, procure" , "Acquire or procure" , "'Get, acquire (6)'" .)