k: knit |  p: purl  |  Rnd: round | st(s): stitch(es)  |  RS: right-side facing
pm/slm(s): place marker/slip marker(s)
yo: yarn over. Starting at front of work pass yarn over needle to back. If st before yo was a knit st, first bring yarn to front underneath needle. When you reach this yo on next round k as directed.  This should create a hole.
k2tog: k2 sts together as one (right leaning decrease)