This is about the level of detail a lot of online guides/tutorials have for most of these packages/workflows/tools/watchamacallitnow. The next step is to read through the documentation, which is often verbose, not pedagogically structured, and sometimes non-existent. The method of last resort is to attack the source code: akin to reading someone's notebook written in a foreign language. You have to get used to their style and shorthand. "Remember, we're just manipulating text" is what I repeat to keep me sane when troubleshooting tooling issues. It's a big time investment to understand the full-stack; a bigger one to keep on top of it. This issue will only grow exponentially as more code is written and more individuals become developers. If anybody is interested in learning web development, Full Stack Python is a great resource that places lots of different web technologies in proper context, it helped me a lot in the past. I can also recommend Mozilla's Documentation Pages for HTML/CSS/Javascript as it relates to webpages, although the quality can be inconsistent. (If you want an example of atrocious documentation, check out the Galago Search Engine/Lemur Project. It's so opaque a research paper dedicated a section to how hard it is for phd's to understand the source code)simply npm your webpack via grunt with vue babel or bower to react asdfjkl;lkdhgxdlciuhw
Bookmarked your Python link! (Welcome back by the way.) I have had multiple goes at teaching myself some web frameworks but have frustratedly quit almost every time. Last web project I just resorted to HTML/CSS with only the bare minimum JS/jQuery, outsourcing the hosting to Github Pages. But then again I wouldn't call myself good at any of those things.
I was where you are a few months ago. I recommend playing around with Digital Ocean droplets to understand web servers, they make it very easy (and their documentation is excellent). With nginx you can have a static site up in <15 min. I have a peripatetic posting style....Let me know if you have any questions about web frameworks, I had several conversations with friends that led to eureka moments.