As a first contribution steps is to use the redmine forge to report bugs and answer to forums questions.
Checkout the code using mercurial:
$ hg clone https://becpg.fr/hg/becpg-community
password : read-only
Make some fixes then post your patches under a redmine ticket or a forum post.
Using mercurial to make a patch:
(make changes) $ hg commit $ hg export tip # export the most recent commit
Create an account to
and submit your translations.
All your contributions will be reintegrated in the trunk and be part of the next community release.