To download r-project repository, navigate to your desired workspace, paste following command and press enter. This will clone the r-project repository into your local.

git clone https://github.com/kunal15abc/r-project.git

You will now be able to open the .R files with your RStudio. If you just want to have a look at the state of the code, here's link to the repository.

To pull the latest code, use the following command inside the repository you have cloned.

cd r-project
git pull

Open Titanic.R file and try to understand the code. Comments have been provided for better understanding. Do not forget to uncomment the install.package command by removing the preceeding '#' when you are running the code for the first time.