This is pretty technical, and is an absolute game changer for local TLS setups. Three paragraphs under this quote go into more details.
Then a third of the way down the page there's a way to try it out live by changing your DNS records. Right after that are a few config samples. Then there are links to three different white papers. Then more code samples. Then more more code samples.
You get the idea.
What exactly are you missing here as far as technical stuff? Is it just that they add exciting fonts and stuff on top of the technical stuff?