Video of how to twist colors to switch?

I have never switched colors before. Once I tried to do it by tying the new color on, but it was a disaster. A pattern I am tempted to try next has a motif…which I have never done, and says to switch colors by tying the new one on and o have smaller balls of each color. I am a very visual learner. Anyone know if there are any online videos on how to do that? Thanks!

Sorry guys! I JUST found the video on this website for how to do it!! I didnt see the “more” link under Basic Techniques!

There are videos of intarsia and fair isle here on KH.
Knitting with 2 colors

I just watched the video on Infarsia color change, but how do you get started? I dont understand how to start right off the bat with the first color change.

http://vickidesigns.homestead.com/Intarsia.html

This is a good site for intarsia–she talks about starting a new color in the first paragraph.