Down loading videos to you tube how is it done?

Well I've got a uke that I have been making random plinking noises with then I bought a vid cam and editing software now I need to fix my computer and get Internet (I'm using a iPhone now
.
But the big question is once I have a video in hand how do I put it on you tube?
I am currenty regestered with them but I don't see any buttons or instructions for uploading

http://www.google.com/support/youtube/bin/answer.py?hl=en&answer=57924

Regards,
Ray