Kristin Nicholas's class on the color wheel, is beautifully presented, in a straightforward manner.  She is super creative, easy to follow!  I highly recommend her class to anyone who wants to enrich their understanding of the impact of color combination in their work.

I'm new to color theory and this was helpful in covering basics of the color wheel and how to start making better color pairings.  

This is more like color analysis and not how to knit colorwork which is what I was looking for.