Git is one of the most popular version control systems which is used in most of the organization. Chances are higher that you need to work on this version control if you get a job as a web developer. This is the reason you should definitely spend some time learning Git and some basic commands such as cloning, pushing to repositories, making a pull request, and merging branches.Github.org is a service where you can push your Git repositories to host your code. It is used for collaboration in that it allows developers to work together on projects.