This page contains a list of "Guides", which are step-by-step instructions for completion of complex tasks (mostly for my own reference, but perhaps useful to others.
It also contains a list of "Head-scratchers", which are problems that I spent a long time trying to diagnose and fix. I'm putting them up here in the dim hope that people might stumble upon them in their frustrated searches for solutions, and save themselves some of the pain and frustration I experienced.