I'm only a beginner in LaTeX myself, but i'll give it a go :)
> 1) when putting the bibliography at the end it sets all the words in
> the title in lowcase, so things like U.S. appear as u.s. or French as
> french, is there a way to tell it to put everything in uppercase?
Put the U.S. bit between curly brackets, like this: {U.S.}.
>
> 2) for some bibliographic entries (books in particular) it puts the
> initial while not in articles, so I get things like R. Feenstra (2004)
> for a book. Is there a way to tell it never to put initials
Not sure, it doesn't seem to do that for me. It does add initials when
you are citing two authors with the same surname.
>
> 3) Do you know how I can cite things as Feenstra et al. (2003)
Do you mean how to cite just the year within the text? What i usually
do in that case is: Feenstra et al. \citeyear{REF}. See apacite manual
for those options. Does that solve your question?
>
> thanks you in advance