Adobe's technical writers are excellent, but I often have trouble finding the topic I want because the table of contents at the left of the User Guide offers only one level of indent. In order to find a sub topic, I must scroll through the entire text. That text is always clearly divided into subtopics, so it would be easy for Adobe to put them into a sub-indented list. Then I could identify and jump to the subtopic instantly.
As it is, the Guide feels like a giant sea of info, with no easy way of bouncing around in it, so I usually resort to a general web search for every single simple thing I need to know. As an example for how inefficient this is, try finding how to use the video group's "pan & zoom" feature. All the search hits, even within Adobe Support, are for other apps, not Photoshop. Yes, there are YouTube results for this, and I watched one, but it took quite a bit of time to find out that "pan & zoom" is a simplified version of a keyframed transform. With a list of sub topics and some text, I would have known this within a few seconds.