Ladies and Gentlemen, gather 'round because we're about to take a journey into the land of SSL certificates. But don't worry, we won't be using any complicated spells. Just trusty old Certbot to guide us through the process.

First, let's make sure you have Certbot installed on your NGINX server. If not, don't panic, just type in this command:

sudo apt-get install certbot python3-certbot-nginx

And voila! Certbot is now a part of your server family.

Next up, we'll use Certbot to get an SSL certificate. It's as easy as saying the magic words:

sudo certbot --nginx

And just like that, Certbot will go to work and get you an SSL certificate that'll make your server's security tighter than Fort Knox.

Finally, it's time to activate the SSL certificate. And what better way to do that than with this command:

sudo nginx -s reload

And that, my friends, is how you install an SSL certificate on an NGINX server using Certbot. No complicated spells or incantations are required. Just a few simple commands and you'll be off to a secure and encrypted land. Happy SSL-ing!