Download the correct Red binary version for your computer from here (takes only a few seconds, it's less than 1MB), and save it to a suitable directory.
Windows, macOS, Linux (*)
For Windows users: Run it by double-clicking on the Red binary file.
It will then automatically build the Red GUI-console.
Next time you double-click on the file, the GUI-console will automatically open.
For Linux/OSX users: You need to open a terminal app to be able to run Red.
Once you have opened the terminal app, change to the directory in which you saved Red.
Now do chmod u+x <red-binary>, which will make sure that Red can be run on your computer.
After that, run Red using ./<red-binary>. This will build the Red console.
Next time you run Red, the console will automatically open.
sudo apt-get install ia32-libs libc6-i386 libcurl3
dpkg --add-architecture i386
apt-get install libc6:i386 libcurl3:i386
sudo yum install glibc.i686
sudo yum install libcurl.i686
pkg install openssl
pkg install fpc-libcurl-3.0.2