Target reached. We are now live at https://rmodak.in
Surprisingly easy it is, to set up stuffs these days. Reminds me of a time seven or eight years ago when each step of the way was marked with lack of documentation and many hours of banging your head against the computer screen. No more!
Here are some resources which helped me do it.
If you want VirtualHost(s) on Apache, check this out. You need to set server name and alias.
Things would have been very hard, were it not for DigitalOcean help pages and EFF certbot!