Make sure the yarn is in front just as if you are going to purl the first stitch.Slip it off purlwise. Then take the yarn to the back between the stitch you just slipped to the right and the one still on the left needle and proceed with the pattern as written. You should start to see the pattern after a few rows. I pull downward slightly on the stitches after each row in worked. Make sure to place a marker of some kind on the RS and clearly mark on you pattern which is the RS row. After you work several rows you will be able to automatically see the difference thus mkaing sure that you are working the correct set of stitches.
I really like the feel of this scarf and it works up quick too. I used one less repeat in mine. I hope my instructions are clearly written. Let me know.