I am generally not a fan of the Foundation's software, and up until this point found the website nearly unbearable -- it was the equivalent of a small room piled knee deep with unbound paper that was thrown in blindfolded (or at least, it was toward that end of the "usability" spectrum").
At a glance right now though -- and I dunno if stuff was fixed there since the Q was written 16 hours ago -- I am impressed, the doc portable is a considerable improvement.
The thing I found confusing initially is that there are three big general categories on the front, "computers", "accessories", and "microcontrollers" over what looks like corresponding columns of subcategory icon (they are inline visually), by which I mean it initially looks like column 1 is about "computers", 2 about "accessories", etc.
But that is not the case, all the icons are part of whichever of the three is currently selected. This is kind of a functionality for regular users vs. simplicity for new ones issue that could probably be resolved easily but isn't a huge deal. Having only one minor criticism counts as pretty good for me.
Then there's the issue of the broken links, which also could have been resolved easily enough -- if they didn't want to stick to the structure, they still could have ripped some (likely, most) of the important paths into a redirect system. The links then still sort of remain "broken" but there would at least then be an easy way to find the same/similar material.
It seems there is now no way to link to specific information, only to a few broad headings.
It's at least as specific as it was, eg:
This could almost shut us down, lol.