You can easily upload a video to YouTube using the website or mobile app. It's free and you can upload as many videos as you want.

It's easy to comment on a YouTube video, or reply to a comment and start a comment thread, on either a desktop computer or mobile device.

Any hobbyist can produce videos and upload them on YouTube to share with the world. But as a small-business owner, you also can produce tutorials to make money, which can be an effective source of ...