Read about WordPress in your usual WordPress channels. And contribute good WordPress general resources to this repo. 😉
It’s good to know how your website infrastructure evolves and works.
I have shown all there is to goodpress, if you want more you might contribute
with bug reports, feature requests;
with code and docs.
I’d be glad to help you with R package development tips if you feel you’re a n00b.
Also follow pressur development!
About WordPress itself, WordPress forums
No judgement on your using WordPress, of course! Keep going! 🚀
But now that your posts are neatly organized in folders they’d be easier to migrate than if they were scattered. Hugo docs in particular have a section about migrating to Hugo from WordPress.