Just the facts ... where and how to contribute.
The source code is in svn at:
The source is also mirrored on Github
(Further details in Developer Info)
The documentation source is in each version's source tree, under docs/manual/
Website source is at: https://svn.apache.org/repos/asf/httpd/site/trunk/content
Patches may be submitted by mailing output of svn diff to the dev@httpd mailing list, or via a pull request at the above Github repo.
Documentation patches may be sent to the docs@httpd mailing list.
(Further details about how to generate an svn diff are in the devnotes
Places to find good things to work on include: