I've used a couple of the products, I don't wear much makeup at all really but love the Benefit brightening primer and touche eclat, and have used a couple of similar products to the others.
So I would use the benefit primer first as a base, after moisturising. I pump a bit out, then just spread it over my face much like a tinted moisturiser, I don't put anything like foundation over the top of it as I find the primer brightens my face enough to give a natural 'my skin but better' look. Then use the touche eclat to even out any dark circles under my eyes, as a normal concealer- dot a bit on the lower inside of my bottom eyelid, dab until its evened out and blended in.
Then I would dab the blush from the duo stick on the apples of my cheeks and use it to add a little extra colour there. I wouldn't personally use the highlighters during the day, for me they are more of an evening look, but I have one similar to the chubby stick which I use just under my eyebrows, sparingly, and blend. I also use sparingly above my blusher, just above my cheekbones to add a bit of shine and definition.