YouTube is best streaming video site.Any one can find any videos on this sites .
Any kind of video is available on this site. You can get information on any topic from this sites.You can get knowledge on any topic from this site.
Just you have to type a normal keyword in their search option.U will get a lot of options for your search.It also have a great feature of blocking all porn sites.
If u have to view 18+ movies or any channel you have to provide your age verification certificate by singing from your Google account then only it allows u to watch that .