I have only been knitting in the garter stitch so far and would like to try the stockinette stitch. I don’t have sound when watching the video so I want to make sure I have this right. Is it just knitting a row then purling a row or is there something more to it? :?? Thanks for the help.
Yup, if you’re working on straight needles, that’s exactly what to do. (But if you’re knitting in the round – on circular needles or DPNs – it’s just knit, knit, knit all the way.) 
Thanks! I’m going to try tonight…