My mother taught me - I'd seen her knitting with dpns once, and asked her how come they had points on both ends. She popped a small yarn ball on one end of one of the needles, to show me what happened when she knit around (I can't recall for sure, but likely was a sleeve). Then, I wanted to know how to do it. I don't recall the exact details, but I did make a small round "thing". Learned a few things - appears as stocking stitch when you knit all the stitches in the round, and that stocking stitch curls. So, I may not recall all the details, but I recall the main lessons!!