I still hold PHP documentation as a golden standard even though I haven't used the language in like 10 years. Everything is spelled out, and what's still unclear, there's usually a comment or two at the bottom of the page asking to clarify just that.

Contrast that with Python, my current main language... not only is it badly organized as a whole (where do I find documentation for `str`? Surely there's a page... no! it's all bundled up together in "Built-in types!"), the individual pages _also_ have no sensible structure and not even a good TOC! Python's jumping between versions and deliberate refusal to back-port features doesn't help either, but that's a different topic...