Youtube is a site which gives you free information about anything in the form of videos, either big or small. You can find anything here. It is very informative and usefull. You can make your channel and start uploading videos on youtube and earn money. It is a easy way of earning money by zero investment. I have have a channel. It takes a little bit time to establish and run your own channel but if you make attractive and interesting videos then it is not very hard to earn money quickly. It pays in the form of dollar. I am using it since 3 months but not getting a good response but I am sure that in some more months I will be earning greatly. It takes time. But the main thing is that it gives many information to us whenever we need it !