> I saw Xavier Leroy teach caml at the CNAM in france, and he know how
> to teach.

Just for the record: I never lectured at CNAM, but probably you're
thinking of Pierre Weis, who taught a great "programming in Caml"
course there for several year.  That course was the main starting
point for our book "Le langage Caml".

Regards,

- Xavier Leroy