It wouldn’t exist if people didn’t engage with it. That’s why he’s always in the news. It’s not some super scientific cabal manipulating everyone. It’s a basic algorithm driven by engagement. Political groups just spend a lot of money driving that engagement. If you don’t like Trump, stop engaging with content featuring him.
What is there to know exactly? You just follow the installer and pick languages and whatnot. It’s no different than installing Windows except that it’s faster.