Firstly, Search a video you would like to watch. For Example I Want To Watch The Offical Minecraft Trailer.

So I Have Found The Video Now What?

Copy The Video Link. Then Paste It Somewhere You Can Edit In, Now After The "watch?v=" Copy Whatever Is There And Go Back To Back To The Main Page

Then Paste Whatever You Copied In The Textbox

Then Hit "Watch Video" Then Boom! You Are Watching Youtube