Wish I had that when I was younger. These days, I'd still rather pay somebody else to do it unless it is a minor job.
I did my own washer and dryer repairs, and simple car repairs thru YouTube. It’s a great place to start, it might take a little digging, but worth spending the time doing.
Among other things, I've repaired a dead control panel on a remote controlled optical telescope, and have repaired a non working solid state linear amplifier, repaired cell phones, replaced cell phone batteries which were said to be non-replaceable, etc. I would have never attempted these types of repairs without video tutorials.