I already have a (low visit) blog website, dataminingdna.com, and I'm going to use it to validate if this is a viable business.
First things first, there was no SSL certificate on the blog site. Today there is! As this is my first expense, I'll consider it Day #1 of my "Build an MVP" journey.
The certificate cost me €30 from my hosting provider. I had a look around and there were cheaper options, which looked like they needed a bit more time in figuring out how to set up.
I used the free wordpress plugin "Really Simple SSL" for a really painless install.