Echoing others here, RJ the Bike Guy on YouTube is probably best.
Much as I like GCN and Park Tool, they have super clean workshops, often show modern bike components, and no clever solutions besides paying $25 on up for specialty tools. If you don't understand some of the bike theory, it can be tough to understand what's happening--and then it's just kinda blindly following instructions--which sometimes doesn't help you fix your bike.
But RJ covers a lot of grittier, older, more obscure, less staged repairs/maintenance. And for some jobs, he has homebrew tools, which he shows you how to make and use. Like, I needed to cold set the rear dropouts on a vintage frame--RJ has a tool for that to help accomplish in a reasonably controlled fashion--it cost a trip to the hardware store and about $5 in metal rod, nuts and washers.