I watch a lot of channels that are listed here mostly for enjoyment. The one channel I have got the most out of is the gardening channel One Yard Revolution OYR. The channel is full of knowledge on gardening and soil health on a budget. I recommend people give it a shot.
She does some great PNW wild foraging and off grid herbalism. Wonderful info filled videos on this wonderful lady's channel that can really help folks find nature's medicine cabinet around them. While based in NE Oregon plenty of the plants discussed can be found in other regions.
"Where will you drive your own picket stake? Where will you choose to make your stand? Give me a threshold, a specific point at which you will finally stop running, at which you will finally fight back." (Derrick Jensen)
Didn't see Gary Pilarchik/The Rusted Garden mentioned. He has nearly 800 videos up with over 100k subscribers so it is a pretty popular channel.
He is my "go to" gardening guru when I want info on starting/growing specific plants, specifics on budget grow lights, homemade remedies for diseases/pests, differences between fertilizers etc... His videos are very concise and well researched.