You don't need to build the FADA from scratch in order to use it: there are installable packages in the downloads section
In order to install and run a FADA node, follow the instructions provided.
To build the FADA from source you first need to check it out from the CVS
Go to the directory named fada
and run maven dist:build-bin
. It will leave some archives in the directory target/distributions
. Use one of those archives and follow the installation instructions