This an excellent video by Unmask Art. He speaks about the importance of drawing accurate shapes before you shade, color choice and types of paper he recommends. His important message is to not rush! Good quality=patience.
“Would you rather have 10 amazing drawings are 15 mediocre ones?”
Brenda Mullard explains color theory in the same way I would have, thoroughly speaking . I highly recommend this video. Only use primary colors from your set! Do not use pre-mixed violet, green or orange. She is rushing specifically for the demonstration only.
5:57 min: “When you get color pencils that are green or color pencils that are purple. They are made to be that perfect color. We’re not going to get that beautiful-like green. When you’re mixing, it’s different when you are mixing. That’s ok. You don’t need to get that “perfect” green. We are worrying about mixing the colors our self.” Hence, learning. The same thing could be said about imitating the exact colors in a photograph, they will not look identical to that of your color pencil. They will be more interesting and expressive to you and your style.
-She briefly explains Warm vs. Cool Relationships. I am expanding on here list. Warm can be: cadmium red/scarlet red, cadmium yellow/canary yellow, or true blue. Cool can be: crimson red, ultramarine blue, lemon yellow (looks neon).
She explains how to make a gradient of black to white, but not tint and shade of one hue. Look at the PDF slides for more specific instructions. She does not explain that mixing complements will will produce grays and browns.
She does not address how cool light (blue tint) creates orange shadows or how a warm light (yellow) creates subtle, purple shadows.