Welding Tips and Tricks: the channel every welder ends up at eventually
via Welding Tips and Tricks (Jody Collier)
#beginner
Woodworking for Mere Mortals: start here if you have a small space and a small budget
via Steve Ramsey, Woodworking for Mere Mortals
Black Bear Forge: the best beginner blacksmithing instruction on YouTube
via Black Bear Forge
Learn Electronics Repair: the beginner-friendly repair channel
via Learn Electronics Repair