A few questions about Maxima



Dear Sirs,
       I started to use Maxima inside Emacs a few time ago,
and I would like to ask a few questions on how contribute
to the project at best.
1)What are the basic steps a supporter/contributor should
   take (inscription to comunity/newsgroup and so on...)?
   a)Do there exists a manual for the developer advicing
     on the best way to write code for the project?
   b)Do Maxima rely on particular libraries for its
     development? What are those libraries?
2)Is there any project aimed to implement the chain rule
   of order n>1 in Maxima by using the Fa? di Bruno
   Formula?
Thank you for your kind attention.

Best regards
Daniele Tampieri