If you don't have it already, you will be able to download it later but if you would like you can get it nowGit
To run our program it is recommended that you use IntelliJ CE since it is free but if you have a Ultimate subscription it works too. From here make sure to select your correct operating system and follow the installation wizard
Select the "Get from VCS Button). After paste the repository clone link in the URL box. If you see a button that says "Download GIT" click it as well.
Click the clone button with the repo link in the URL box and it will clone the repository.