To expand what @paperdigits already said, the first post for this category has links that might be helpful for you (bug/enhancement reports for instance):
Official website: http://www.darktable.org/
Official user manual: http://www.darktable.org/usermanual/index.html.php
Bug reports: https://redmine.darktable.org/projects/darktable/issues
User Wiki: https://redmine.darktable.org/projects/users/wiki