Instructor arranging a tour around central Austria (5)
I believe the answer is:
tutor
'instructor' is the definition.
(tutor is a kind of instructor)
'arranging a tour around central austria' is the wordplay.
'arranging' indicates anagramming the letters.
'around' means one lot of letters goes inside another.
'central' means to look at the middle letters.
The central letter of 'austria' is 't'.
'tour' with letters rearranged gives 'tuor'.
'tuor' going around 't' is 'TUTOR'.
(Other definitions for tutor that I've seen before include "Master" , "Teach" , "Private or university teacher" , "college teacher" , "Private educator" .)