Learn to Knit - Purl Stitch
(1) With the working yarn at the front, insert right-hand needle into first stitch on left-hand needle, from back to front.
(2) Wrap yarn around right-hand needle, from right to left over the point of the needle.
(3) Pull wrap through the stitch,
(4) forming a loop on the right-hand needle. Slip the stitch off the left-hand needle.
When all the stitches on the left-hand needle have been transferred to the right-hand needle, turn the work and place the needle with the stitches on it to the left hand to start the next row.