Once downloaded double-click on the downloaded file to start the installation. The tutorials and 3D data must be installed after the WindFarm program is installed.
When installed, start WindFarm (from Start menu/Programs/WindFarm Release 5) and the WindFarm screen (the Designer) will appear alongside the Quick Tour module. Please follow the Quick Tour example project as it provides the best way to explore the capabilities of WindFarm. The Quick Tour can be closed down at any point if you want to use WindFarm in a standalone mode.
If you want to explore WindFarm in depth then download, install and try the self-guided tutorials. Open the installed document \Tutorial\UserGuide.pdf to start the tutorial (you will need Adobe's reader). Full instructions are included and it provides all the links to the tutorials.
The help system provides full information on using WindFarm.