Yes, we all know that YouTube is a great resource for entertainment. But it can also be a good educational tool. If you want to know how to fix something or how to go about doing something online such as downloading music, go to YouTube. Turns out there are many different tutorials out there that teach various things to people.
I would warn though that anyone can put a video out on YouTube and that means that some of the videos aren't as good as others. In short there could be times when you have to look through some duds to actually get someone who knows what they are talking about and can actually explain it in good detail.