That having said: I did make a guide with some Buyer Tips myself which I update from time to time - do note though that this is based on personal preference
https://forum.openwrt.org/t/an-openwrt-beginners-guide/
I don't know how I missed this guide, but ed8, that was exactly what I meant... We should have your post in a pinned thread, for those of us who need it every few years, it's just perfect!