What is Youtube? - Youtube is a Video submission website.

How can I make money from Youtube? - Sign up, submit videos, and if they get enough traffic, then youtube will place ads on your videos. If anyone clicks on these ads, then you will earn money.

How much money can I make? - depending on how many videos and traffic, then you can make a lot.

How much time do I have to invest in it? - The time to make your videos.

Does it cost anything to sign up? - NO, it's free to signup.