Instructions on how to apply hair extensions to the whole head?

Is there any links to some sort of website or links to videos?Instructions on how to apply hair extensions to the whole head?
Only go to a professional hair extensions salon, for your hair extensions needs.Instructions on how to apply hair extensions to the whole head?
check youtube.

http://www.youtube.com/watch?v=iRXMTjCgG/a>
Is it long enough for clip-on extensions?

http://teachmeshowme.com/clip-on-hair-extensions.php

blackheads