Make sure you have git installed.
If you know how to use the terminal or command prompt, you can navigate to the directory you want to download this project to and run the command:
git clone https://github.com/Yeti-Robotics/TemplateYetiRobot.git
If you don't know how to do that, chatGPT is a great resource.
If you have a project open, go to File>New>Project from version control
then input this url: https://github.com/Yeti-Robotics/TemplateYetiRobot.git.
If you do not have a project open, click the Get from VCS button.
Once you have the project downloaded, you can open it in IntelliJ and start coding. Make sure you have set up your development environment by following this guide