Download Bloxstrap and run it. If necessary, configure your preferences and then install. that's all!
It is not impossible that Windows Smartscreen displays pop-ups when running Bloxstrap for the first time. This happens because it is an unknown program, not because it was actually detected as malicious. To turn it off, just click "More Info" twice, then "Run Anyway" twice.
Once installed, Bloxstrap will be added to your start menu, where you can access menus and reset your preferences if needed.