Easiest way to install & run Red,
Paste in Powershell Console (keep all in one line):
            New-Item -ItemType Directory -Force -Path C:\red;(New-Object System.Net.WebClient).DownloadFile('https://static.red-lang.org/dl/win/red-063.exe','c:\red\red.exe');Start-Process -Filepath 'c:\red\red.exe'