The videos on QuiltersTV seem to come and go with no schedule! Some have been on for eons and others are on and then off.
Billie's suggestion for notching is this.... On the strips that you cut to have half a color at the top, go down 3 or 4 colors, fold the color in 1/2 and cut tiny notches on the edges. Be sure to stay within the seam allowance. When you go to sew strips together, these notches will line up with the seams on the strips that have not been cut.
Billie also suggests using an eyebrow razor for the unsewing. I had never heard of an eyebrow razor but it look like it worked pretty slick for her. I just used a seam ripper.