i am trying to make a music video trailer of supernatural but i have no idea where to start so can someone please tell me how i can download clips of supernatural and how i can make the music videos?

You can find clips of the show on different fan sites. I get most of mine here-->link
All you do is right click on the clip and then click "save target as" to upload it to your computer(If it is in "zip" file, you'll need to download a zip file opener). Then if you have a video maker on your computer(ex.Windows Movie Maker)then you can make music videos. Happy to help with anything else...

The way I do it is to download the whole episodes from a peer to peer site/software. Usually they are in AVI format so I have to change them to MPG. I then use windows movie maker to make them. It always starts with a song though. At least for me it does. Hehe.