Install Application

Create directory

With file explorer navigate to approriate destination (i. E. "C:\Program Files")
Right klick and choose "New"
Rename the new folder as you like (i. E. "Trainer")

Copy Executable from Github to your new folder

Take your browser and navigate to https://github.com/SchwertAs/NoMansSkyTrainer/blob/master/noMansSkyTrainer.exe
Push button "Download" Navigate to your new created directory and save the exe file.