There are tutorials for just about anything on youtube.
Bad tutorials usually have a title like "How to fix (gadget/item) with a few simple steps" then the video spends 10 minutes showing you funny things the guy's cat is doing and he doesn't get around to the actual tutorial until the very end.
But sadly these videos will get high ratings because people click it to see the funny cat and thus a really bad tutorial is at the top of the search list for the item you want to fix.
Yet there are some really good youtube channels with a huge selection of really good how to videos. You just need to hunt for them.
One of my favorite How To channels is 1A Auto I use it to work on my truck. They have tons of very specific how to videos on DIY Auto projects.
Youtube tutorials helped me build my gaming computer, Beast1.
I can’t find one for putting up those soffit thingys that close off the bottom of the roof. Until I can figure it out and do it, I am comfortable knowing that my tiny little house gets lots of fresh air. I did a lot of the work here myself, and most of it was YouTube directed!