Weaving tail ends as you knit

Is there a good video that shows how to do this? I am following a Vivian Hoxbro pattern for domino knitting, but I can’t figure out how she tells to do this. Help please. Thank you. m

There’s a video on this site:

http://www.knittinghelp.com/videos/knitting-tips

It’s under the name of “Duplicate Stitch Join”, under “Joining a New Color Yarn” section.