Some of these files are in zips and others are executable files which will install directly to pre-determined location on your C Drive.
In the case of the BladePro presets you will need to extract them to your Environments and Textures which will be created when installing BladePro itself. I would suggest putting the Environments & Textures Folder into your C:/ Drive Folder for easier access.
The Texturiser Filter should be installed by extracting it to a folder created within the Paint Shop Pro directory folder called Plug-ins or Plugins.
The additional Filters/Plugins can be installed as separate folders under your plugins folder and you might need some or all of the DLL files installed into your Windows\System folder to operate them . . . . . . . .
Some of the other Freebies are things that I've downloaded over the years and are useful or even indispensible! They were free downloads and they are free downloads now courtesy of the Bearz Cave.
Please Enjoy!!