The official PCStage website is here.
To set up a PCStage system, go to the download download and install the current production version of the product.
The program should be installed in c:\pcstage.
Next, optionally!, you can if you wish upgrade to a beta test version, which if you are just playing with PCStage is not a harmful thing to do. PCStage Betas are generally production stable, and often have cool new features. Following the links on the PCStage download page, download the current beta release. This usually comes as a zip named pcsbeta.zip, which just has a single file, the new version of pcstage.exe. You may wish to save your existing pcstage.exe before copying in the new beta pcstage.exe
Finally, following the links on the download page, download plugins
to taste. These are installed in a c:\pcstage\plugins directory,
which you may need to create yourself. Documentation for each plugin
is in the form of an HTML file in the plugins directory.
There are, as I write this, over a dozen plugins available, which provide a significant chunk of PCStage's capability, so you really need to view the list.
PCStage software is priced at zero dollars / pounds / yen / euro / [whatever your currency is] for all uses except DMX512 lighting control. If you need to do lighting, and I encourage you so to do :-), you need to purchase the PCStage DMX512 output device, as detailed on the official PCStage webpage. No other DMX512 "dongle" will work. It is through the sales of these boxes that the ongoing development of PCStage is encouraged.