These are the main abbreviations you will find in Mochimochi Land knitting patterns.
[ ] = Repeat actions in brackets as many times as specified BO = Bind off CC = Contrasting color CO = Cast on DPN(s) = Double-pointed needle(s) est = Established I-cord = [not an abbreviation, but a technique that lets you knit a skinny tube on two double-pointed needles. I recommend this >Purl Bee tutorial for this technique.] k = Knit k2tog = Knit 2 stitches together k3tog = Knit 3 stitches together kfb = Knit through front and back of one stitch (I recommend this >Knit Picks tutorial for this technique.) m1 = Pick up the bar between 2 stitches and knit through its back loop MC = Main color p = Purl p2tog = Purl 2 stitches together pm = Place marker rnd(s) = Round(s) RS = Right side sm = Slip marker ssk = Slip 2 stitches knitwise, then insert left needle through front of both stitches and knit together st(s) = Stitch(es) St st = Stockinette stitch (knit on right side, purl on wrong side) w+t = Wrap & turn (I recommend this >Purl Bee tutorial for the technique) WS = Wrong side yo = Yarn over