Find a place to put it (anywhere works, except for the KSP directory.)
Move the "InfiniteDiscoveries" folder to the aforementioned place you found to put it in.
Install ImageMagick (optional, best if you can though) https://imagemagick.org/script/download.php (ImageMagick is NOT a ksp mod, it is a standalone program! Install it like any other program.) (The right version is "ImageMagick-7.1.1-15-Q16-HDRI-x64-dll.exe" which takes some time to scroll down to.)
Install Kopernicus into KSP.
Run the "InfiniteDiscoveries" shortcut inside the InfiniteDiscoveries folder, you can also make a shortcut to access it easily.
Set your target KSP GameData folder in the folder browser.
Adjust whatever settings you want.
Press the big "Start Generator" button.
Wait until the panel on the right says that the generator is finished.
Start KSP and enjoy!
Alternative instructions on the github page!
Raw stats are from the beginning of time until now. Each follower and download entry represents one hour of data. Uneventful hours are omitted.