This page goes over how to create a Github account. There are no special settings needed to use your Github account on the ZFS on Linux Project.
Github did an excellent job of documenting how to create an account. The following link provides everything you need to know to get your Github account up and running.
https://help.github.com/articles/signing-up-for-a-new-github-account/
In addition, the following articles might be useful: