Pure Data can run on computers running Windows, Mac OS or Linux.
Open a browser and navigate to the Pure Data downloads page. Select the installer for your computer and download it.
After installing, launch Pure Data. A blank Pure Data window will open. This window acts as a console log when you are running a patch. You can print messages to it and get real time feedback.
Pure Data is open source and has a lot of community support for documentation. There is a getting started guide available on the Pure Data website that will be helpful if you are new to Pure Data