Oh lordy. The GCP docs. I straight up ignore them most of the time and just search for relevant guides elsewhere. So much of what Google puts up is marketing fluff, high-level descriptions, or at best a description of the happy-path to doing something.
The most galling thing is GCP support. I'm on a team which pays for google support and it is by far the most lax, useless nonsense I've ever encountered. They are literally no help.