1. Install Java SDK 1.6+. You can check if the correct java version is installed by running java -version.
  2. Download the reo compiler corresponding to your operating system ( linux, mac, or windows).
  3. Unzip the archive in the directory you want reo to be installed, and run the install script (either or installer.bat).
  4. Run reo to see if the installation succeeded. Then, follow the README to get your first example running.