How to Crochet Slippers from a Square for beginners – video tutorial. For crochet beginner's, it will introduce the weave of simple basic: a magic ring, double crochet, slip, shell, puff and popcorn stitches. Popcorn stitches. A Popcorn stitch is basically 5 dc's into the same stitch/space. The “Popcorn” is formed by pulling the top of the last dc through the top of the first dc.