I use Hugo, it's not super complicated.
You basically just define templates in pseudo html for common content (header, nav panel, footer, etc), and then you write your articles in markdown and Hugo combines the two and outputs actual html files.
You also have a content folder for js, css, and images which get output as is.
That's about all there is to it, it's a pretty minimalist static site generator.
Hosting wise you can just put it on github pages for free.