Extra posh type elevated above you and me (5)
I believe the answer is:
bonus
'extra' is the definition.
(I've seen this before)
'posh type elevated above you and me' is the wordplay.
'posh type' becomes 'nob' (I can't justify this - if you can you should believe this answer much more).
'elevated' says the letters should be written backwards (in a down clue, letters go up).
'above' says to put letters next to each other (in a down clue, some letters go above others).
'you and me' becomes 'us'.
'nob' back-to-front is 'bon'.
'bon'+'us'='BONUS'
Can you help me to learn more?
(Other definitions for bonus that I've seen before include "Extra money paid for good performance" , "Sum added to salary for good performance" , "Extra income" , "Extra pay, perhaps at Christmas?" , "bribe" .)