Mean to turn a key in and succeed in doing so (6)
I believe the answer is:
manage
'succeed in doing so' is the definition.
'manage' can be an answer for 'succeed' (managing is a kind of succeeding). I'm not certain of the 'in doing so' bit.
'mean to turn a key in' is the wordplay.
'to turn' indicates anagramming the letters.
'key' becomes 'g' (musical key).
'in' indicates putting letters inside.
'a'+'g'='ag'
'mean' is an anagram of 'mane'.
'mane' placed around 'ag' is 'MANAGE'.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for manage that I've seen before include "Supervise staff" , "Handle and control the business" , "Be in overall control of" , "Control; cope" , "Handle, oversee" .)