Easy to follow -- a set down! (6)
I believe the answer is:
alight
'set down' is the definition.
(alighting is a kind of setting down)
'easy to follow a' is the wordplay.
'easy' becomes 'light' ('light' can be similar in meaning to 'easy').
'to follow' is a charade indicator (letters next to each other).
'light' put after 'a' is 'ALIGHT'.
(Other definitions for alight that I've seen before include "(Of bird) settle" , "Burning; get down" , "Brilliant" , "Get off the bus because it's on fire" , "Come to rest, settle" .)