IMO, a really easy way to start would be with a GitHub pages repo[1] or a Neocities site[2]. You really shouldn't need anything more than basic HTML and CSS for most blogs. If you want tags or sidebars or RSS, you can use a static site generator like Jekyll[3], and it's still pretty simple.
[1]: https://pages.github.com/ [2]: https://neocities.org/ [3]: https://jekyllrb.com/