So it's the exclusive private club one has to earn his entry in. Got it...
I hate online video tutorials with a passion. How to waste 10 minutes about something which could had been written in 2-3 phrases: Useless. I'm of the generation which had learned to read, and reading is my preferred medium of learning. But okay, that's me.
As for the tutorials, maybe, but with a big caveat: If I judge by the content making tutorials on this site, most I've seen are well past their "best before" date, describing things which are no longer true. Unfortunate, but to be expected on a WIP project.
Others are simply besides the point, because written by people with completely different priorities than the average modder like me. Example: Spending an inordinate time on how to package a mod for uploading on mod.io, but omitting to explain how to create said mod...
TL;DR: Not so many. The simple step-by-step explanation on how to create a civilization or a map still eludes me... I don't need it anymore, but that's 200 posts and a month later.