[knitqueen]

This is how 'The Knitter's Bible' says to do a yo at the edge of your work:

Before a knit stitch, bring the yarn forward as if to purl, knit the first stitch bringing the yarn over the right needle as you do so.

Before a purl stitch, take the yarn back as though to knit, purl the first stitch bringing the yarn over the needle as you do so.