Worker from start is a newbie (7)
I believe the answer is:
artisan
'worker' is the definition.
(Artisan = A skilled manual worker)
'from start is a newbie' is the wordplay.
'from' indicates the answer is hidden within the clue.
'ARTISAN' is hidden within 'start is a newbie'.
(Other definitions for artisan that I've seen before include "Sinatra (anag) -- skilled manual worker" , "man with skill" , "Egypt peninsula; holy Mount" , "Skilled worker or craftsman" , "Skilled craftsperson" .)