Learns about ordinary Italian city (7)
I believe the answer is:
salerno
'italian city' is the definition.
(Salerno is a city in Italy)
'learns about ordinary' is the wordplay.
'about' is an anagram indicator.
'ordinary' becomes 'O' (abbreviation e.g. O-Levels).
'learns' with letters rearranged gives 'salern'.
'salern'+'o'='SALERNO'
(Other definitions for salerno that I've seen before include "Battle" , "South Italian port" , "Italian city; Orleans (anag.)" , "European city!" , "Orleans (anag) - Italian port" .)