How to co-work on github
1) Fork a project to your own github account:
2) Clone the project which in your account to local:
git clone https://github.com/this-is-you/first-contributions.git
3) Create a new branch, and switch to the new one.
git branch -b my-contribution
4) Do your job!
5) Commit your changes into your local repo:
git commit -m "update changes"
6) Push your commit to github:
git push origin my-contribution
7) Pull Request to original project: