Cast on 44 (for size 1/3 months) or 48 (for sizes 6/9 and 12/18 months) stitches. Then knit ribbing (knit 2 purl 2) until sock is 7 (1/3 months), 8 (6/9 months) or 9 (12/18 months) cm long. Check out my other videos if you want to know how to knit the re