Self-introduction by illiterate quack somewhere in France! (5)
I believe the answer is:
medoc
'self-introduction by illiterate' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.
'quack somewhere in france' is the wordplay.
I cannot really see how this works, but
'quack' could be 'doc' (I've seen this before) and 'doc' is found in the answer.
The remaining letters 'me' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for medoc that I've seen before include "Wine-growing area" , "French intoxicant" , "French red wine" , "Red wine from southwest France" , "Type of wine" .)