It indicates there's more from the following clue (3)
I believe the answer is:
etc
'the following clue' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'it indicates there's more' is the wordplay.
'it' becomes 'e' ('e' can mean 'electronic' which is similar to 'IT').
'indicates there' becomes 'tc' (I am not sure about this - if you are sure you should believe this answer much more).
'more' is a charade indicator (letters next to each other) (some letters added to the previous ones).
'e'+'tc'='ETC'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for etc that I've seen before include "Etcetera (abbrev.)" , "And so on, in brief" , "And so on, briefly" , "And so forth (abbr)" , "'And the rest, in short (3)'" .)