I am a fairly new knitter and found this easy but beautiful scarf to make. I don't quite understand this yarn changing technique Looked for a You tube with no luck.
The scarf is called FLing on fetchingknits.com.
Changing colours: No cutting! When it is time to change yarn colours, just drop the yarn you are working with and pick up the other colour. Always pick up the other colour from underneath the yarn you just dropped. In this way you will carry the yarns up the side of your work and won't have any extra tails to weave in at the end (which is a good thing, because this piece is pretty airy and any extra weaving will be pretty obvious).