I'm a long-time user of free/open source software, and write various things for both fun and profit. I don't take myself all that seriously and I do all of my own stunts.
You can find me at these fine establishments on the web: Open Source Musings, The Monday Kickoff, Weekly Musings. and The Plain Text Project.
Authored Comments
If you're looking for a stripped-down Reveal.js template or two, I have a couple in a GitHub repository (https://github.com/ScottWNesbitt/Templates) -- the files Image Background Slides.html and Simple Slides.html. Feel free to grab them. And, yes, I need to comment them a bit better ...
Here are a few tutorials that you might find useful (I did!): https://www.gadgetdaily.xyz/create-an-html5-presentation-with-reveal-js/, https://www.penflip.com/bballentine/reveal-js-for-instructors, http://htmlcheats.com/reveal-js/reveal-js-tutorial-reveal-js-for-beginn…, https://www.sitepoint.com/creating-slick-html-presentations-using-revea…. In addition to Slides.com, take a look at Strut.io, which is a basic but serviceable web-based tool for creating Reveal.js presentations.