YouTube is perhaps the #1 spot that students go for information that doesn't have to be read. There's a profound amount of junk out there, but if you're looking for a walkthrough on the latest software revision (when they move around all your controls!), YouTube usually strikes gold.
The software I use typically has a button for automatically uploading my content to YouTube. In fact, most smart phones have sharing options that direct the files directly to YouTube. Uploading can take a little while, but there are good online options in the YouTube world for image stabilization, annotation, and links. I wish I could add hot buttons right into the videos that link to specific sites, but I understand that there is potential for abuse that YouTube is not interested in addressing.