ANT 1.8+ (Only if you need to build a model from within the Console)
GCC 4.+ (Only if you need to integrate native code in FORTRAN or C)
You need to set the JAVA_HOME environment variable, and let it point to your JDK install directory. See FAQ on how to so it if you are not sure. In addition, add the $JAVA_HOME/bin folder to your PATH variable.
Unzip the OMS distribution into any folder. Get the OMS zip (oms-?.?.?-console.zip) file from the home page.
Execute console.sh or console.bat in order to execute it.
On its first execution the console will install required jar files and configuration files into HOME/.oms. Those files are being used to run models, or an IDE can use those jar files during model development.