Short and Sweet
From the description: Sure, it’s summer, but that doesn’t mean your sock knitting needs to stop. These low-cut sport socks are a nice lightweight project for warm-weather knitting, and you’ll even get some warm-weather wear out of them. The heel’s slip stitch ribbing is designed for hard wear and comfort, while the roll at the back of the ankle will help keep them (and their cute colours) from disappearing into your trainers.
Skills set: provisional cast on, knitting in the round, grafting, knitting (and purling) together, yfwd, yb, ssk.