Sure, feministmama, I'll include a video using two colors, with both methods. To work intarsia, you put down the old yarn, pick up the new yarn (usually from underneath the old yarn, so they're overlapping), and give the new yarn a tug, to prevent the hole, and then knit or purl with it. ...I'll illustrate this on the video, (when I finally have a sunny day to shoot it).
KnittingHelp Queen Bee
"There is a vitality, a life force, an energy, a quickening that is translated through you into action, and because there is only one of you in all of time, this expression is unique. And if you block it, it will never exist through any other medium and it will be lost. The world will not have it. It is not your business to determine how good it is nor how valuable nor how it compares with other expressions. It is your business to keep it yours clearly and directly, to keep the channel open. You do not even have to believe in yourself or your work. You have to keep yourself open and aware to the urges that motivate you. Keep the channel open."
— Martha Graham