If you are thinking of knitting the Pop Blanket and are not sure of short rows, here is a great tutorial from the Purl Bee on wrap-and-turns on the knit and purl side:
|picture from the purl bee|
Another way to do short rows is the Yarn Over short row method. Here is a great pictorial of Yarn Over short rows:
|picture from socktopus|
Which method are you using? I decided on the good ole wrap and turn method.