My favorite static site generator by far is Eleventy, which you can learn by reading their sample code at eleventy-base-blog. It uses NodeJS which runs on all major platforms, and it generates plain old HTML that you can put on any static host. I played with several of the generators on the Jamstack list, and decided that this is the one I’m most comfortable recommending. It has a very high power-to-effort ratio, you can do some really useful stuff with very little knowledge. I’m using it on my personal site, nycki.net, to automatically generate a “navbar” on every page, plus an RSS feed for my blog. It’s also nice for generating “prev/next” links under articles.