Many time we need to use some version control system.GitHub is a web-based hosting service for projects that use the Git revision control system.It is written using Ruby on Rails by GitHub,Inc.

For Initial Setup of your account and repository , you can use   https://github.com/     using the graphical web interface you can simply create account and repository.

We can also create Repository using command line using the Github API.

Start using Git :

1. Open command prompt or teminal in linux
2. create a directory using
   Windows :
   md<directory name>Ubuntu: 
   mkdir <directory name>
3.  move into directory
   cd <directory name>
4. Setup Git
   git init  
5. Put your code in this directory
6. Add your code to git repo
   git add .
7. git commit -m “<commit message>”

For further help you can go through : Git cheat sheet