> my problems have become sufficiently advanced
In my experience if you search for an advanced topic it's likely to drown you in beginner's tutorials for anything even remotely related.
My pet peeve is i do embedded linux on custom hardware, and every time i need to check something i'll be up to my neck on tutorials telling me how to enable, say, spi on a raspberry pi in user space. Even if I was explicitly searching for a totally different SoC and a recent reference for the kernel functions :)