Git Installation in Ubuntu | Cloning a Repository from GitHub
Follow instructions at this link to install Git on your Ubuntu machine and to create SSH key pairs and create SSH link with your GitHub account. It also shows how a repository could be cloned onto a directory location in Ubuntu. To work with branches in your git repository, refer to instructions at this link.
Install vim editor to work with files in the Git repository.
# Update package headers
# Install vim editor
apt-get install vim