One of the things I truly love about the Internet has always been the folks who are super passionate about something, who spend tons of time and energy (and frequently money, but you don't really count the money when you're super passionate about it, do you?) learning everything about that thing.
And then, they share that passion with the rest of us. Back in the days of Flickr and forums, you'd find lengthy threads detailing how they did X complicated thing to their bike, and how you can do it, too. Whole explainers, sometimes with hand-drawn diagrams; that kind of thing. It was very much like the digital equivalent of finding a like-minded group of friends in your area, hanging out in their garage or basement or tiny apartment kitchen, and just hashing out how to change that one thing that's been driving you nuts about your bike.
Or like when you and your buddies had a garage band that one time. Or two times. That same enthusiastic DIY energy, only distilled through the waves and wires onto the Internet. At its best, YouTube can very much be an extension of that energy, only with the benefit of video that, when carefully edited, can show you in detail and up close what a thing that a person is trying to describe to you actually looks like.
