On the page for your own fork, use the "Code" button and copy the URL for cloning to your clipboard:
Recommendation: Use the SSH URL within the "Code" modal. Username and password authentication via HTTPS is no longer supported, and you won't notice until you try to commit your local code back to the fork. Refer to the SSH documentation on GitHub if you need help setting this up.
On the command line, in your home directory or a directory you have for projects, run:
Make sure your email address is also added to your
GitHub email list
so that your commits will be properly associated with your account
and you will be promoted to Contributor once your first commit is
Follow the instructions to build Node.js. You should not install the version of Node.js built with these instructions. Follow the instructions to build and test only. Once you have make test or vcbuild test running successfully, you are ready to start contributing.
If all your tests passed, you can look at the Next Steps page for suggestions on ways to find issues to work on. If you have tests that are failing, try to figure out why that is. If you need help, search/use the Node.js issue tracker.