Initial GitHub setup

Obtain a GitHub Account

If you don't have a GitHub account (i.e., you're not logged in to Github), sign up at the top of this page by clicking the green sign up button.

Authenticate to GitHub

GitHub has an excellent (short!) tutorial for how to authenticate to GitHub.

Authentication to GitHub is required since mpi-forum/mpi-standard is a private repository -- GitHub won't let you access that repository via Git unless you have authenticated.