Just turn and knit your sts again, and turn and knit again. Keep this up for a while to practice the knit st. That makes garter stitche. You can try the purl st and alternate a knit row with a purl row too and that makes stockinette. If this will become a scarf, not just a practice piece, though, the edges will curl under on the stockinette parts, so you might want to work the purl rows as k4, purl 14, k4, to keep the garter st going along the edges and that helps keep them from curling.
sue- knitting heretic