This video knitting tutorial will help you learn how to knit the yarn forward round needle increase. The yarn forward around needle (yfrn) is different from a yarn over (yo), it is use to transition from a knit stitch to a purl stitch. This technique is usually used in a lace stitch.
Step 1: Bring the yarn to the front of the work (as to set up for a purl stitch)
Step 2: Bring the yarn over the top of the needle
Step 3: Bring the yarn back around to the front of the work setting up for a purl stitch
Step 4: purl stitch