Set-up:
If GitHub Desktop works for you, then you can click ‘Clone or download’ and then click open in Desktop.
If GitHub Desktop is not working for you, then click ‘Clone or download’ and then download a zip file and unzip on your computer.
Open RStudio and ‘New Project’ in the upper right. Then select ‘From Existing Directory’ and select the directory where the ‘Test-Website’ files are.
From RStudio, click ‘Build’ from upper right and then ‘Build Website’. Your website should open. You can select ‘View in browser’.