Learning English to start with — tricky usually (2,7)
I believe the answer is:
in general
'usually' is the definition.
(I've seen this before)
'learning english to start with tricky' is the wordplay.
'english' becomes 'e' (abbreviation).
'to start with' means one lot of letters go next to another.
'tricky' indicates anagramming the letters.
'learning' after 'e' is 'elearning'.
'elearning' is an anagram of 'IN GENERAL'.
(Other definitions for in general that I've seen before include "Mostly" , "Usually; mainly" , "on the whole" , "More-or-less" , "Commonly" .)