Collection of information is in French? Really enjoy getting on top of that (6)
I believe the answer is:
digest
'collection of information' is the definition.
(a digest of information)
'is in french? really enjoy getting on top of that' is the wordplay.
'is in french?' becomes 'est' ('is' in French).
'really enjoy' becomes 'dig' (dig can informally mean to really like something).
'getting on top of that' is a charade indicator (letters next to each other) (in a down clue some letters go on top of others).
'est' put after 'dig' is 'DIGEST'.
(Other definitions for digest that I've seen before include "Periodical that summarizes the news" , "Process food" , "Break down (food)" , "Abridgement" , "Shorten" .)