Nice people, one possibly reads (5)
I believe the answer is:
dears
'nice people' is the definition.
'dears' can be an answer for 'people' (dear is a kind of person). I'm unsure of the 'nice' bit.
'one possibly reads' is the wordplay.
'one possibly' indicates an anagram.
'reads' anagrammed gives 'DEARS'.
Can you help me to learn more?
(Other definitions for dears that I've seen before include "Darlings" , "Elderly ladies (sl.)" .)